Grass / Flowers / Snow are placed incorrectly in newly created chunks
19/May21: This has now been fixed for everything except trees. For any remaining or reintroduced issues, please open new and specific reports with new repro steps.
The bug
World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, snow, trees, and possibly other things in places it shouldn't.
Affected situations
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
- /tp @p -898 64 44766 but on seed 5384881648447775625
Lava and water lakes have floating plants and trees on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
- /tp @p 1636 63 11014
All examples given above work in 18w06a, on seed 7913388302499728605.
Linked Issues
is duplicated by304
MC-5469World generating bug, desert templeDuplicateMC-6387Floating snowDuplicateMC-8365Vines not being attached to anythingDuplicateMC-8511Tree spawning on sand in "Swampland" biomeDuplicateMC-8716Tree growing on sandDuplicateMC-9087Generation of mines.DuplicateMC-9694Terrain Generator is messedDuplicateMC-10058flower in the gravelDuplicateMC-10194Trees generating above a lakeDuplicateMC-13794Floating Tall GrassDuplicateMC-14317Free-hanging VinesDuplicateMC-18848Grass growing in the air and on sandDuplicateMC-28329Minecraft tree render glitchDuplicateMC-29448[World gen bug] 2-block high wild grass on sandDuplicateMC-29527double tallgrass floating generationDuplicateMC-29546Invisible entity over waterDuplicateMC-29868Tall grass and double tall grass spawn on none dirt blocks.DuplicateMC-30006Floating Rose BushDuplicateMC-30485Flowers fly on amplified worldDuplicateMC-30990The grass and snow floatDuplicateMC-31297Tall grass generates on sand (maybe in savanna only)DuplicateMC-3201213w38a snapshot bugDuplicateMC-33070Grass growing in blocks that are not landDuplicateMC-35153Tall Grass Generates on non-grass blocks like Sand, Gravel, etc.DuplicateMC-35159Cacti can be naturally found floating or be found not on sand DuplicateMC-35641Grass can be found on sand blocksDuplicateMC-37044Grass appears on sandDuplicateMC-37672World generation made a tree and some grass floating above waterDuplicateMC-37962Floating Grass and Grass on Gravel in Minecraft v1.7.2DuplicateMC-38193Natural Tree Spawned with no ground under it.DuplicateMC-38199Tall Grass Spawned with no Ground underDuplicateMC-38860in savanna biome, grass blocks spawned on airDuplicateMC-45560Terrain generation glitchDuplicateMC-46106Generation of snow layer on packed iceDuplicateMC-46762Floating grass and mushroomsDuplicateMC-49875Flowers spawning on sand and pop outDuplicateMC-50446Flying treesDuplicateMC-53128Acacia tree fully generates in plains biome at -123 79 468 in seed 3704076581703183452DuplicateMC-58778Some blocks like water/lava source blocks and grass do not update properly after generationDuplicateMC-58858Floating Flowers & 1/2 Flowers In New WorldDuplicateMC-59435Flying trees and grass.DuplicateMC-59629Dark Oak spawning incorrectly.DuplicateMC-60752Major bugs/Amazing World generationWorks As IntendedMC-64680Grass and flower spawn bugDuplicateMC-67589Half FlowersDuplicateMC-68789Tall Grass generates on sand, stone, and gravelDuplicateMC-69775Rose in sandDuplicateMC-71672Plants Generating On Thin AirDuplicateMC-73157Floating snowDuplicateMC-79784Wheat seeds randomly found on the groundDuplicateMC-85922flowers and grass spawning over water and lavaDuplicateMC-89279chunk errorsDuplicateMC-91193Random plants above lakesDuplicateMC-93777torches and chests spawn on air blocksDuplicateMC-103331Tall Grass generates on top of sand and gravelDuplicateMC-104552It grew a tree in sandyDuplicateMC-105102Tree logs despawn when spawned above water in Plains biomesDuplicateMC-105947Grass and Double Tallgrass can find on sand blocks.DuplicateMC-107382Mansion Generates before certain world features are generated, causing broken structureDuplicateMC-107563Woodland Mansion GeneratingDuplicateMC-108902tons of glitches with world generationDuplicateMC-110351Vines don't despawn after cut down tree in swampDuplicateMC-116374Wrong generation of "double plants"DuplicateMC-116868Floating flowers can be generatedDuplicateMC-116883Grass spawns over villages grass pathslDuplicateMC-120291Grass and flowers generating above water and blocks that don't support themDuplicateMC-120661Flying grassDuplicateMC-121568Floating snow layersDuplicateMC-121569World generation problemsDuplicateMC-122018Tree is generated above the waterDuplicateMC-123056Hello I want to report agrass and a tree without a trunk floating on a lake in the prairies and many crosses on the floor of my worldDuplicateMC-125200Generated two tall flowers get cut off by low treesDuplicateMC-125539Grass generating on sand / Sand generating in a village structureDuplicateMC-125836Floating FernsDuplicateMC-126909Grass in the air by world generationDuplicateMC-127434Grass plant spawns floating in the air.DuplicateMC-128083World GeneratingDuplicateMC-128327Grass and flower bugDuplicateMC-128893grass spawn near/on the waterDuplicateMC-129153Grass / flowers / snow / trees are placed incorrectly in Buffet World generatorDuplicateMC-130171[18w21a] Grass spawns in mid airDuplicateMC-130506Snow covering non-existent blocksDuplicateMC-130553World GeneratorDuplicateMC-131211Tall grass grows over surface waterDuplicateMC-131255Above water terrain generation needs fixingDuplicateMC-131691Floating Rose?DuplicateMC-132670Poppy on sandDuplicateMC-133135The plants on the pond will be empty after the formation of the plantsDuplicateMC-133470Roses on sandDuplicateMC-133504Floating Tallgrass on surface lakesDuplicateMC-133538Floating tree above waterDuplicateMC-133898Tree spawning above a lakeDuplicateMC-134426Grass can grow on Sand in beachesDuplicateMC-134492Grass spawning ontop of sandDuplicateMC-135417Grass in air DuplicateMC-135418Flying treesDuplicateMC-135466Found floating GrassDuplicateMC-135837Floating grassDuplicateMC-135919Tall Grass Spawning IsuueDuplicateMC-135944Generation of plantsDuplicateMC-136839Tall GrassDuplicateMC-137445Floating grassDuplicateMC-137661Floating GrassDuplicateMC-137897sorry if duplicate structures are good generating but...DuplicateMC-138360Tall Grass in skyDuplicateMC-138400Bug with saplings, grass, and crops - 18w43cDuplicateMC-138471Tree spawning over water bugDuplicateMC-138521Some Floating GrassDuplicateMC-139426Levitating GrassDuplicateMC-139700Grass generating on air above pondDuplicateMC-139835Some blocks are generate above the air.DuplicateMC-140384Grass spawns on airDuplicateMC-140417Floating grass can be seen in villagesDuplicateMC-140420Chunks and worlds have problem loading in new snapshotsDuplicateMC-140536floting grassDuplicateMC-140597New plains villageDuplicateMC-140621snow in the air above the iceDuplicateMC-141014floating grassDuplicateMC-141057Flying grassDuplicateMC-141065Trees floating over pondsDuplicateMC-141163sugarcane generate in wrong places.DuplicateMC-141605Grass spawning over waterDuplicateMC-141715Floating GrassDuplicateMC-142147grass spawns on grass blockes and gravel when world createdDuplicateMC-142662BugDuplicateMC-142747Grass load floating over naturally generated pondsDuplicateMC-143278Grass is floating in the air.DuplicateMC-143963Grass DuplicateMC-144611Floating grass above waterDuplicateMC-144694The floating grassDuplicateMC-144695The grass should not be on the sandDuplicateMC-144863snow spawning on air blocksDuplicateMC-144923Grass over lakes with no block under it.DuplicateMC-146042Floating Snow (MC 1.14 Snapshot 19w11b)DuplicateMC-146311There are floating grass and a floating tree above a lakeDuplicateMC-146467Flowers grow in airDuplicateMC-146761Floating GrassDuplicateMC-146889Some Gravity Blocks Generating in AirDuplicateMC-146989Generator BugsDuplicateMC-147512Blocks hanging in the airDuplicateMC-148211Grass Not Generating CorrectlyDuplicateMC-148472Floating SnowDuplicateMC-148481Snow generates on empty blocks.DuplicateMC-148961Eng. Sometimes, in bamboo jungle grass over water.DuplicateMC-148990Berry bushes can spawn on sandDuplicateMC-149091i wanted to see the new update and i teleported to a pillager outpost and found this!?!?!? floating grasDuplicateMC-149183Grass & Flower glitch DuplicateMC-149293Tree Missing BlocksDuplicateMC-149413Update to new version with bamboo and reserved worldDuplicateMC-149980When you generate a world the grass flyDuplicateMC-150111Trees and plants generate over natural water sourcesDuplicateMC-150118Aerial grass hahaDuplicateMC-150272Grass Is Floating above water.DuplicateMC-150273Grass Is Floating above water.DuplicateMC-150398Floating grass over small lakes in plains biomesDuplicateMC-150611багDuplicateMC-150645bamboo on airDuplicateMC-150669Bamboo trees generating bugDuplicateMC-150679Летающие цветыDuplicateMC-150823Grass in the airDuplicateMC-151370Flying Grass and Broken floorDuplicateMC-151420Floating Trees Being GeneratedDuplicateMC-151630Floating FlowersDuplicateMC-152041Snow DuplicateMC-152165Floating Grass/Tall Grass above waterDuplicateMC-152443Floating snow and poppys above ice and waterDuplicateMC-152544Grass generates floating above water EDIT: duplicateDuplicateMC-152871Small peonies, floating peoniesDuplicateMC-152924tall grass in mid airDuplicateMC-154117Flying snow.DuplicateMC-154492Floating trees (of various kinds and biomes)DuplicateMC-154500some grass are flying on the pondDuplicateMC-154538Mob spawn during day in lakes under snow in superflatDuplicateMC-154717Grass/Tall Grass sometimes generates floating in midairDuplicateMC-155695Minecraft incorrectly generated lake - floating trees, floating grassDuplicateMC-155837Some of the sunflowers are floating above waterDuplicateMC-1564401.14 world genration problemDuplicateMC-156488tree is spawning with no trunkDuplicateMC-156680Trees spawning above pools of water.DuplicateMC-156924I was walking in a Snowy Biome when I saw floating snowDuplicateMC-157078When a pond spawn beneath a tree, the tree will stay and float above it.DuplicateMC-157230Grass is Generating On SandDuplicateMC-157918snowDuplicateMC-158001Floating Tall Grass on WaterDuplicateMC-158091GRASS ON WATER DuplicateMC-158301Shrubbery Spawning Floats in the AirDuplicateMC-158331floating grass and grass on the path grass thingDuplicateMC-159577Tree floatingDuplicateMC-159760Fliegendes GrasDuplicateMC-160274erba fluttuanteDuplicateMC-161066Flying grassDuplicateMC-161326Flying Grass in 1.14.4DuplicateMC-161723When I was exploring my 1.14.4 world I came across a bunch of snow layers the were floating in the snowy_mountains.DuplicateMC-162657Floating grass.DuplicateMC-162816Mushroom Tree Generated over Water has no stemDuplicateMC-163419glihtDuplicateMC-163431Tree spawned in airDuplicateMC-163535Grass floating in mid-airDuplicateMC-164262Bug sur la génération de l'herbeDuplicateMC-164624Floating grass above water pondsDuplicateMC-164699Grass generates mid-airDuplicateMC-165227Flying flowers and grassDuplicateMC-165359Flying GrassDuplicateMC-167337Flowers try to generate on farmland in VillagesDuplicateMC-168101Floating bushes over small lakesDuplicateMC-168775Flowers generating on sandDuplicateMC-169062When loading a new world, trees can spawn floating above lakes.DuplicateMC-169254Sometimes grass, snow layer or rails can floatDuplicateMC-169316floating on water grassDuplicateMC-171590Grass Floats SomehowDuplicateMC-171730Grass (the decorational X-shaped block) can be found floating, especially over water.DuplicateMC-172520I was playing around in 20w07a when i saw some poppys floating in mid-air over o pond or lake like thingDuplicateMC-172744Snow seems to generate floating in snowy biomesDuplicateMC-174012Floating BugDuplicateMC-177270A thin layer of snow will spawn without a block under itDuplicateMC-180121Floating GrassDuplicateMC-181322Grass generating on non grass blocks and mid airDuplicateMC-182379Natural flying grass in snapshot 20w18aDuplicateMC-183300Floating tressDuplicateMC-183523Trees/grass generating over lakesDuplicateMC-184285Grass FloatingDuplicateMC-184331Grass spawning on magma and netherack on ruined portalsDuplicateMC-185135glass spawnDuplicateMC-185792Grass can replace blocks in Woodland MansionsDuplicateMC-185948Large Fern cut off at generationDuplicateMC-186417Naturally generated grass will float when generating on pondsDuplicateMC-187556Grass can spawn with air below it in LakesDuplicateMC-187704Spruce trees generated over pond missing logsDuplicateMC-187990Floating vines in swamp under foliage from two treesDuplicateMC-190645Floating sugar canes are naturally generated on lakesDuplicateMC-190733Grass floats on pondsDuplicateMC-191772Trees levitating over waterDuplicateMC-191843Летающий снег / Летающий песок / лава и вода в особняке разбойниковDuplicateMC-192264Flying grass / The vegetable garden is not on ploughed land / Water doesn't flow / Not the right place for a vegetable gardenDuplicateMC-192790Floating Vines in World GenerationDuplicateMC-193017The bug with the grassDuplicateMC-193379snow is flyingDuplicateMC-193603Flying GrassDuplicateMC-193716I want to report some bugs.DuplicateMC-193972grass can float (rere)DuplicateMC-194098Grass in the airDuplicateMC-196032Grass generates on non-soil type blocks upon world genDuplicateMC-196705floating grassDuplicateMC-197181Floating trees on mini lakesDuplicateMC-197653floating grassDuplicateMC-198214Grass (Decoration type) floating over pools of water. DuplicateMC-198365Cursed sunflower with no bottom halfDuplicateMC-199236Grass grows above water in the airDuplicateMC-199363Flying grassDuplicateMC-199455Floating Grass over water pools in plainsDuplicateMC-199697Grass floats in air when generating worldDuplicateMC-199748Floating cactus on a lava lakeDuplicateMC-200299Floating Tall GrassDuplicateMC-200346Floating Grass and TallgrassDuplicateMC-200547Floating dark oak treesDuplicateMC-201459floating grassDuplicateMC-201659Floating sugar cane generatedDuplicateMC-202392Found grass floating in the air.DuplicateMC-202464Bottom part of tree does not generateDuplicateMC-202849Plants flingDuplicateMC-203059Grass on a sand block...DuplicateMC-203122Floating layers of snow, grasses, trees and pieces of land.DuplicateMC-203281Minecraft grass and tall grass generating above waterDuplicateMC-2038122x2 dark oaks spawn in airDuplicateMC-204560levitating grassDuplicateMC-204616Tall Grass FloatingDuplicateMC-205347Bad grass generation.DuplicateMC-205374i saw graas on sandDuplicateMC-205516Vines Sometimes Randomly Floating In The Air, Jungle Trees Can Generate In HalfDuplicateMC-205639umm whatDuplicateMC-205846Grass generating where it shouldn'tDuplicateMC-206770Floating treesDuplicateMC-210535Flower glitchDuplicateMC-211131Floating Grass - this bug has been like forever in gameDuplicateMC-211771its not game breaking but its present, I think since the release of 1.14. DuplicateMC-212327Floating flowers in flower forest biomeDuplicateMC-213256Tall grass generates inside MelonDuplicateMC-213609Weird GenerationDuplicateMC-214023Like levitating grass, glow lichen can generate in levitating position too.DuplicateMC-214990different water levels, floating treesDuplicateMC-215691swamp trees world generationDuplicateMC-216332Floating snowDuplicateMC-216436About grass growing in the airDuplicateMC-216548Floating grass above waterDuplicateMC-216893Broken terrain generationDuplicateMC-216997I just found floating snow in the game, Iceologer ??DuplicateMC-217890Flying grass.DuplicateMC-218863Grass/moss generation in lush caves around lava lakesDuplicateMC-219202Amethyst geodes can cause floating grass and grass and incorrect grass statesDuplicateMC-219205Grass generates on sandDuplicateMC-219249-Flower On The Sky- MinecraftDuplicateMC-219503Grass can float when generatingDuplicateMC-220006Trees sometimes generate floatingDuplicateMC-220059Floating GrassDuplicateMC-223794floating grassDuplicateMC-224234floating tree DuplicateMC-224267Floating natural plants overlap on lakesDuplicateMC-224873Flowers growing on netherrackDuplicateMC-225446BugDuplicateMC-225633the plants generate incorrectlyDuplicateMC-226104Floating grassDuplicateMC-1340Floating vines on world generation.DuplicateMC-1859Floating GrassDuplicateMC-36669listInvalidrelates to26
MC-13210Mushrooms spawn in lightAwaiting ResponseMC-73878Village fields do not clear all blocks above them resulting in too dark spotsAwaiting ResponseMC-103320Mesa (Bryce) 'V' patternWorks As IntendedMC-113898Water below lily pads is replaced by wooden planks village pathsFixedMC-124988Water can border caves on chunk bordersAwaiting ResponseMC-137452Bamboo grows in lots of inappropriate places in Bamboo JunglesFixedMC-214797Pointed dripstone can generate floating at transitions between local water levelsFixedMC-225842Flowers can generate on large plants near lakesFixedMC-225895Floating grass can still generate above lava lakesFixedMC-81467Parts of structures replaced by lava lakes
NormalMC-125343Mineshaft halls generating on top of each other fail to properly generate plank floor, causing rails to floatNormalMC-125654Tall seagrass only generates lower part when ocean monument is in the wayConfirmedMC-139696Decorations can generate on the ground inside of pillager outposts
LowMC-170074Dead bush generating on orange (and possibly blue) terracotta in desert pryamidLowMC-225839Trees, huge mushroom & huge fungus can generate floating over lakes or lava lakesNormalMC-29613Bonus chests generate on top of waterNormalMC-140242Decorations such as grass, flowers, ferns, sweet berry bushes and dead bushes can generate on invalid blocks in villages and trail ruinsLowMC-140727Decorations and terrain can generate inside of structuresNormalMC-198993Dead bushes can generate in waterConfirmed
MCPE-102355Grass and flowers generates on sand and gravel (after a while, it breaks)ConfirmedMC-125858Grass / flowers / snow / trees are placed incorrectly in Superflat WorldFixedMC-138178Lily pads can generate on landFixedMC-212146Glow lichen can generate floating inside underground structuresFixedMC-225843Snow layers can still generate floating over lakesFixedMC-225850Grass, tall grass, flower, double flower, fern, large fern and tree can generate on sand or gravelFixedMC-750Sand and gravel can generate floating in the airWorks As IntendedAttachments37
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
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- Fixed
![[Mod] markderickson](../../../data/avatars/users/18946.svg)
[Mod] markderickson
Gody van den Bogaard![[Mojang] Cory Scheviak](../../../data/avatars/users/92893.png)
[Mojang] Cory Scheviak- 247
- 93
- Confirmed
Important- World generation
- biomes bulk chunks double-plant grass lake mojang_internal_1 plains tall_grass world-generation
1.4.2 - 21w19a
1.4.2 1.4.4 13w03a 1.10.2 16w39a 16w39b 16w39c 16w40a 16w41a 16w42a 16w43a 16w44a 1.11 1.11.2 17w06a 17w17a 17w17b 1.12.1 1.12.2 17w45b 17w46a 18w06a 18w07a 18w07b 18w07c 18w10c 18w14a 18w14b 18w15a 18w16a 18w21a 18w22c 1.13-pre1 1.13-pre3 1.13-pre6 1.13-pre8 1.13-pre10 1.13 18w31a 18w32a 18w33a 1.13.1 1.13.2-pre2 1.13.2 18w47b 18w48a 18w48b 18w49a 19w03c 19w04b 19w05a 19w06a 19w07a 19w09a 19w12b 19w13a 19w13b 19w14a 1.14-pre1 1.14-pre2 1.14-pre5 1.14 1.14.1 1.14.2-pre1 1.14.2-pre2 1.14.2 1.14.3-pre2 1.14.3 1.14.4-pre1 1.14.4-pre3 1.14.4-pre4 1.14.4-pre5 1.14.4-pre6 1.14.4 19w34a 19w35a 19w36a 19w37a 19w38b 19w39a 19w40a 19w41a 19w42a 19w45b 19w46b 1.15-pre1 1.15-pre2 1.15-pre3 1.15-pre4 1.15-pre5 1.15-pre6 1.15-pre7 1.15 1.15.1 1.15.1-pre1 1.15.2-pre1 1.15.2-pre2 1.15.2 20w06a 20w07a 20w08a 20w09a 20w10a 20w11a 20w13a 20w13b 20w15a 20w16a 20w17a 20w18a 20w19a 20w20a 20w20b 20w21a 20w22a 1.16-pre1 1.16-pre2 1.16-pre3 1.16-pre6 1.16-pre7 1.16-pre8 1.16-rc1 1.16 1.16.1 20w27a 20w28a 20w29a 20w30a 1.16.2-pre1 1.16.2-pre2 1.16.2-pre3 1.16.2-rc1 1.16.2-rc2 1.16.2 1.16.3-rc1 1.16.3 1.16.4-pre1 1.16.4-pre2 1.16.4-rc1 1.16.4 20w45a 20w46a 20w48a 20w49a 20w51a 21w03a 1.16.5-rc1 1.16.5 21w05a 21w05b 21w06a 21w07a 21w08a 21w08b 21w10a 21w11a 21w13a 21w14a 21w15a 21w16a 21w17a 21w18a 21w19a- 21w20a
Created Issue:
Grass is placed incorrectly in newly created chunks
When new chunks are created grass is sometimes placed above surface level or on sand. It can be destroyed like 'normal' grass.
Environment
Win7 74bit, fully updated, Java SE 1.7.0_07 (build 1.7.0_07-b11), vanilla minecraft
Attachments2
2012-10-25_21.21.35.png
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It also affects 1.4.5.
But there isn't supposed to be sand in the overworld preset. What?
But it's superflat!
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![[Mojang] Nathan Adams](../../../data/assets/gravatar/dinnerbone.png){kind=small}
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![[Mod] CubeTheThird](../../../data/assets/gravatar/cubethethird.jpeg){kind=small}
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Grassisplaced incorrectly in newly created chunksGrass and Trees are placed incorrectly in newly created chunks
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GrassandTrees are placed incorrectly in newly created chunksGrass / Flowers / Trees are placed incorrectly in newly created chunks
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Tall grass spawns on top of village path
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![[Mod] Skylinerw](../../../data/assets/gravatar/skylinerw.png){kind=small}
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![[Mojang] Grum (Erik Broes)](../../../data/assets/gravatar/grum.png){kind=small}
[Mojang] Grum (Erik Broes)is duplicated by
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When new chunks are created grass is sometimes placed above surface level or on sand. It can be destroyed like 'normal' grass.
Also affects the stone block variants in the woodland mansions getting populated with ores, other stone, dirt, etc.
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When new chunks are created grass is sometimes placed above surface level or on sand. It can be destroyed like 'normal' grass.
Also affects the stone block variants in the woodland mansions getting populated with ores, other stone, dirt, etc.
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![[Mod] Neko](../../../data/avatars/users/92901.png){kind=small}
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When new chunks are created grass is sometimes placed above surface level or on sand or gravel. It can be destroyed like 'normal' grass.
Apologies, completely overlooked that fact. Looking forward to seeing it fixed!
Also, confirmed to be present in minor 1.11.2
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![[Mod] bemoty](../../../data/avatars/users/50554.png){kind=small}
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Grass / Flowers / Snow / Trees are placed incorrectly in newly created chunks
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![[Mod] Pokechu22](../../../data/avatars/users/92931.png){kind=small}
When new chunks are created grass is sometimes placed above surface level or on sand or gravel. It can be destroyed like 'normal' grass.
It appears since the 1.13 snapshots the incorrectly placed plants directly break, therefore you should now look for the plant items instead.
W
hen new chunks are created grass is sometimes placed above surface level or on sand or gravel. It can be destroyed like 'normal' grass.
It appears since the 1.13 snapshots the incorrectly placed plants directly break, therefore you should now look for the plant items instead.World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, and possibly other things in places it shouldn't. Affected situations:
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
Lava and water lakes have floating growing things on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
All examples given above work in 18w06a, on seed 7913388302499728605.
World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, and possibly other things in places it shouldn't. Affected situations:
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
Lava and water lakes have floating
growing things on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
All examples given above work in 18w06a, on seed 7913388302499728605.
World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, and possibly other things in places it shouldn't. Affected situations:
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
Lava and water lakes have floating plants and trees on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
- /tp @p 1636 63 11014
All examples given above work in 18w06a, on seed 7913388302499728605.
World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, snow, and possibly other things in places it shouldn't. Affected situations:
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
Lava and water lakes have floating plants and trees on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
- /tp @p 1636 63 11014
All examples given above work in 18w06a, on seed 7913388302499728605.
World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, snow, and possibly other things in places it shouldn't. Affected situations:
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
- /tp @p -898 64 44766, but on seed 5384881648447775625
Lava and water lakes have floating plants and trees on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
- /tp @p 1636 63 11014
All examples given above work in 18w06a, on seed 7913388302499728605.
World generation places tall grass/double tall grass, flowers/double flowers, sugar canes, snow, trees, and possibly other things in places it shouldn't. Affected situations:
Sand/gravel patches generated around water (lakes/rivers/oceans/etc) have things growing on them:
- /tp @p 946 68 9609
- /tp @p 1250 67 10150
- /tp @p 1230 70 10333
- /tp @p -898 64 44766, but on seed 5384881648447775625
Lava and water lakes have floating plants and trees on top of them:
- /tp @p 1100 66 10364
- /tp @p 1111 66 10382
- /tp @p 1636 63 11014
All examples given above work in 18w06a, on seed 7913388302499728605.
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![[Mod] Les3awe](../../../data/avatars/users/79847.png){kind=small}
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Landscaping is much more difficult than first sounds. Sure, it seems easy to dig away from dirt and grass (or add a little more), but then get into things like sand under rock and some trees on the other side... Removing sand but realizing to possibly leave the rock in place, or removing trees in a way to looks natural (i.e. not leaving leaves around, or not taking the leaves of the to-be-kept neighbor tree, or even giving that neighbor tree some extra leaves as it now has some empty space to fill...)
Just take a look how the simple lake generation routine fails with its landscaping (issue MC-610). Village landscaping would be couple order of magnitudes more complex.
There is a lot more issues along landscaping than those few mentioned above. Things that seem so trivial and obvious to us humans (like choosing in a split second that few blocks need to be removed or added) are sometimes near impossible for a piece of program. Or feel free to try and create an AI program with an eye to natural shapes, and which runs on average PC using less than 5% of its computing resources.
Additional complexity is that it would need to landscape the village even when it or its environment is not yet fully created - creating it chunk by chunk as the player moves... It would need to decide how to landscape around one house without knowing yet how the house just 16 blocks away is placed, or if there is a house at all but a ravine, or lake, or lava stream that will flow into the house soon after.
Very likely the same backing reason as for MC-610.
The trees are spawned on "right spot", the problem is that spot gets changed afterwards. In this case, the lake comes later, after which dirt-to-sand conversion is done (to create beaches near waters). In this example case, there is indeed a lake right next to the location. There are also other similar spots in the same world and same swamp - tree on top of sand near a lake. Not very common, though.
The sand generator code is indeed so simple that it only scans a defined radius around the randomly chosen water block for dirt or grass and converts it to sand. It ignores the existence of anything else there might be, like trees.
However, depending on how MC-610 gets fixed (if it gets), this issue may or may not go away at the same. (Edited: ) Lakes and these sand spots are created alike, as part of the "decoration process" which is supposed to happen after the chunk base generation, but have some inter-order issues with that ordering. The particular order of generating chunks can affect the outcomes, too.
Actually, this is a duplicate, leading to issue MC-610. The magic word is the "lake" (and usually "floating", too).
This issue, MC-5485 and MC-1340 are likely duplicates of MC-610; there is a lake underneath in each issue. The remaining two issues seem to have different cause. Since dinnerbone has stated in this issue that it is a "feature", might be reasonable to resolve MC-610 the same (and hint about the reason being in this issue).
Then again, the MC-610's detail (grass/flowers/etc) can have easy workaround (just check one more block above and remove as necessary), so maybe keep it open until decided by Mojang.
Ah. Just few steps from spawn.
An interesting case of MC-610, having two floating trees and some floating grass over the same lake, and part of the lake "cavity" generation apparently hits high enough level that it lacks water. But indeed a duplicate of that other issue.
I can now confirm. And yeah, it's a duplicate of MC-610 because there is also floating grass. Thanks Markku.
Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 54% of tickets are being closed as duplicate.
![[Mod] Torabi](../../../data/assets/gravatar/torabi.png){kind=small}
The Status field is rarely of any interest. What you should pay attention to is the Resolution field. In the case of MC-610, that's "Won't Fix". You should also read Dinnerbone's comment on that issue: "We actually like the quirks like this."
Duplicate of MC-610 as this is another example of strange/illegal block generation.
Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being closed as duplicate.
And Mojang has confirmed that while it is a bug, they have decided it will stay, thus this (and some other related ones) are resolved as "works as intended" or the more correct "won't fix". See MC-610, Dinnerbone's comment.
No need to open a new ticket for that, there are already several..
Mojang has decided "Won't fix" for that particular issue. See MC-610.
It is because of a kinky/quirky interplay of the order in which various world features are generated and the order in which chunks are generated (latter affected by how player moves etc.).
Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being resolved as duplicate.
Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being resolved as duplicate.
Yes, but see the comment in MC-610:
[Mojang] Dinnerbone (Nathan Adams):
We actually like the quirks like this.
Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being resolved as duplicate.
Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being resolved as duplicate.
25th Duplicate of MC-610, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being resolved as duplicate.
Apparently, Mojang likes quirks like that (can't remember where or when, but Dinnerbone stated that in one bug report)
Edit: Yeah, exactly, MC-610
Duplicate of MC-610 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.
34th Duplicate of MC-610 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.
MC-610 would be fixable, but [Mojang] Nathan Adams said there
We actually like the quirks like this.
Unfixable. MC-610
Confirmed, but all Dark Oaks are spawning in the Roofed Forest biome.
This are "features" of the world generator, see MC-610
and in which the grass on sand is unfixable. MC-610
This happening too but I am not describing this bug, as with the first seed you have no "structure" which causes the plant to get bugged, also MC-610 is discribing, that the plants get generated at incorrect spots, but like you see in the video, the double grass is created correct, while the peony is not
Unfixable. MC-610
Unfixable. MC-610
Duplicate of MC-610
Unfixable. MC-610
Duplicate of MC-610
The devs like such quirks.
Unfixable. MC-610
Confirmed, but I doubt that this will be fixed as this falls in the category "lovely terrain generator quirks", see MC-610
Confirmed that the village generates that way. Of course that's a MC-610, but it's still a bug that villagers try to plant at too dark spots.
BTW at spawn of that seed is a village house with grass blocks in the village house, another 'lovely terrain generator quirk'...
From [Mojang] Nathan Adams, on MC-610:
We actually like the quirks like this.
I cannot say if this is the opinion of the Pocket Edition developers.
Unfixable per MC-610
See MC-610.
This issue duplicates MC-610.
Dupe of MC-610
I think it relates more to MC-610 rather than duplicating it.
either that or the name of that ticket is not informative enough.
Since the mansion is a new structure, it's behaviour also might be different.
Duplicate of MC-610.
The "smith" room is another ticket.
Duplicate of MC-610
Thank you for your report!
However, this issue is a Duplicate of MC-610.
It has been linked to this report. If you have additional information, please add it to that report.
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And this site is for bug reports only.
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It looks like since 17w47b (like 47a too) the double plants break now instantaneously.
MC-610 however still exists.
This issue relates to MC-610.
Duplicate of MC-610, use the search function in the future 
Thank you for your report!
However, this issue is a Duplicate of MC-5128 and MC-610.
It has been linked to this report. If you have additional information, please add it to that report.
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![[Helper] gaspoweredpick](../../../data/avatars/users/80904.png){kind=small}
Duplicate of MC-610
Duplicate of MC-610. Please use the search function to see if your issue has already been reported.
Thank you for your report!
However, this issue is a Duplicate of MC-610.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
It has been linked to this report. If you have additional information, please add it to that report.
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No, MC-610 is placing floating grass by the world generator.
This is remaining top half of floating grass when mining the supporting block.
Duplicate of MC-610.
Duplicate of MC-610.
Duplicate of MC-610
Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
If you have additional information, please add it to that report.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
If you have additional information, please add it to that report.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
It has been linked to this report. If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
The environment is supposed to only contain pc details.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
If you have additional information, please add it to that report.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
If you have additional information, please add it to that report.
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Thank you for your report!
However, this issue is a Duplicate of MC-139717 / MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-140286 / MC-126931 / MC-140242 / MC-140469 / MC-610.
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Duplicate of MC-610. Please use the search function before reporting.
Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
MC-610 is a very similar issue but I have never seen trees do it until the 1.14 update so just add to that list then.
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
Thanks for the report; however this is a duplicate of MC-610. Also, issues should only be set to private if it contains personal information or is about an exploit.
Thanks for the report; however this is a duplicate of MC-610.
Duplicate of MC-610
Duplicate of MC-610
Duplicate of MC-610
![[Helper] Johnibur](../../../data/avatars/users/28381.png){kind=small}
Thank you for your report!
We're actually already tracking this issue at MC-610, so we will resolve and link this ticket as a Duplicate.
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Duplicates MC-610.
In the future, please use the search function to see if your issue has already been reported.
This is a very common occurrence for spawn locations in grassy fields, and either the chest spawns one or two layers higher (even when there's no grass underneath), or it spawns on the ground, but then won't spawn the torches when their spots are occupied with grass.
I wonder if it is releated to MC-610
Thanks for the report; however this is a duplicate of MC-610.
Thanks for the report; however this is a duplicate of MC-610.
Duplicate of MC-610.
Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Duplicate of MC-610. Please note that bug reports are only accepted in English.
Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're actually already tracking this issue in MC-610, so I resolved and linked this ticket as a duplicate.
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Thank you for your report!
We're already tracking this issue at MC-610, so I will resolve and link this ticket as a duplicate.
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Thank you for your report!
We're already tracking this issue at MC-610, so I will resolve and link this ticket as a duplicate.
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Relates to MC-610, but it happened later so it's not the same bug.
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Duplicate of MC-610
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Thank you for your report!
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![[Mod] SPGoding](../../../data/avatars/users/44622.png){kind=small}
Thank you for your report!
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Thank you for your report!
However, this issue is a Duplicate of MC-610.
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Duplicate of MC-610
We've reopened this ticket since we're not sure whether it's intentional or not (MC-610 is a valid bug). If someone could provide a seed / coordinates where this is still happening, please do so, so that we can confirm this issue.
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Could be duplicate of MC-610, or at least related to. (I.e. generating some feature/structure does not clear out all blocks in its relevant space, above or inside, etc.)
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Thank you for your report!
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Duplicate of MC-610
This might be a duplicate of MC-610?
Careful with the terms.. In this particular case, it belongs to the category of being a bug that is (was) accepted (by Mojang) as (more or less) permanent feature. (An issue can be both, a bug, and a feature, i.e "Won't Fix".) Note also the use of quotes around the word "feature" in earlier comment by Nathan Adams. (It was certainly nice that those particles have been added there, giving a warning about its volatile nature.)
(The part of "been in the game since forever" is one of the common, yet very bad reasons for stating something is not a bug. Been in the game for long might indicate, or at least correlate, on it being a feature (or at least accepted as "wont fix"/"feature"), but... For example, see MC-7200. It is a very obvious bug (incorrect math), been there for around 9 years.)
Btw. my earlier comment about noting to see Dinnerbone's comment (in MC-610).. no idea, I couldn't myself find such any more. However, Nathan Adams once upon a time (2013) resolved it by using state "Won't fix", which implies it being a bug, but just accepted to stay as a "feature"...
... Until years later, Mojang decided to reopen it (meaning they have intent to work at least on some part of it), with priority "important". Does not sound to me like it being a fully accepted "feature" at that point. The problem is, as usual with Mojang, they don't bother much with looking at linked issues, and end up resolving them in different ways. (Or not resolving at all, compare MC-7196 and MC-7200 case, frigging same classes, even same methods, fixes provided, issues linked, and they fix just the other one ><). MC-610 was marked "Won't fix", this one "Working as intended", even though it was clear that both should have been handled the same. And later, MC-610 was reopened, this one was not.
Note, the generic root cause for most of these floating stuff -related issues are sort of same, even if the technical mechanism might have slightly different ways in leaving the floating something in the world. Thus, I'd assume that if Mojang considers one floating weird to be worthy of fixing, they might consider all of them... if they just remembered to look at the linked issues.
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MC-610 includes this.
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Thank you for your report!
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For the issue with the lava lake, see MC-610.
Sugar cane generation does not appear to work correctly in the latest release candidate. I found a sugar cane floating on top of a lake in 1.16-rc1. I used the exact same seed on 1.15.2, went to the exact same coordinates and found no sugar cane there.
Seed & coordinates:
1493028
-85 70 -79
Possibly related to MC-610, but definitely not the same bug, since sugar cane, to my knowledge, generates after the lakes have already generated, as opposed to structures and tall grass, which generate before the lakes.
Duplicate of MC-610
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Thank you for your report!
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Hi there!
This looks like a duplicate of MC-610. Make sure to do a quick search for your bug before posting it, and if you find it, vote for it, comment on it, and follow it. This is the best way for it to be prioritized by Mojang. Making a duplicate post means more work for the volunteers who help out to moderate and clean things up for the developers to look at and fix what needs to be fixed.
Duplicate of MC-610
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Duplicate of MC-610
Hi there!
This looks like a duplicate of MC-610. Make sure to do a quick search for your bug before posting it, and if you find it, vote for it, comment on it, and follow it. This is the best way for it to be prioritized by Mojang. Making a duplicate post means more work for the volunteers who help out to moderate and clean things up for the developers to look at and fix what needs to be fixed.
Hi there!
This looks like a duplicate of MC-610. Make sure to do a quick search for your bug before posting it, and if you find it, vote for it, comment on it, and follow it. This is the best way for it to be prioritized by Mojang. Making a duplicate post means more work for the volunteers who help out to moderate and clean things up for the developers to look at and fix what needs to be fixed.
Duplicate of MC-610
Duplicate of MC-610
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Thank you for your report!
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Thank you for your report!
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Hi there!
This looks like a duplicate of MC-610.
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Hi there!
This looks like a duplicate of MC-610.
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Duplicate of MC-610
Hi there!
This looks like a duplicate of MC-610.
Duplicate of MC-610
Possible duplicate of MC-610?
Can you please provide the seed of the world. Also this isn't a dupe of MC-610
This has nothing to do with MC-610, It's just a layer of ice generated wrong, not plants generated at the wrong place.
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Confirmed.
Confirmed
Also happens with gravel, see
MC-3437.MisterSanderson, the screenshots you added have nothing to do with the reported bug. The bug I'm reporting here is about grass being placed on top of sand/gravel. Your screenshots show a bug about grass being placed off-center. As far as I've understood they're doing this on purpose to prevent grassy fields from looking the same all over the place. I agree this off-center grass could look better on edge-blocks, but please create a seperate bug for this.
Oops, sorry.
Can you also delete those pictures?
Done.
Thanks very much.
Uploaded an Image showing grass growing on gravel including position and seed.
World type is: Superflat (Preset: overworld)
Still present in 1.4.7
This issue seems to happen with Flowers as well (se image) the broken Flower was already there.
Snapshot 13w03a - Generated a superflat "overworld" preset map. Some grass spawned on sand, and some of these turned into seeds immediately after world generation. Confirmed in this screenshot: also happens with flowers.
Add the label "lake" to this issue.. Didn't find this one.
(Edited plenty, was too incorrect...)
Seems order of generation is ..., villages and other structures, lakes, "decorations" (trees, flower, etc.). This explains why lakes can carve themselves under temples and such, but not why there are trees and grass floating above them..
Anon Ymus, the sand comes likely from the lake generation.
superflat first creates the "base" material, after which comes lakes.. there could very well be more code after that which looks for things like "water next to dirt/grass -> convert to beach". I haven't checked for that (yet) as it seemed quite minor thing (and the generation code is also a bit of a maze).
Edit: Well, now I looked, and indeed there is such post-processing which exactly looks for dirt/grass near water and converts blocks to sand.
Okay, reason partially solved.
When "decorating" one chunk, the decoration process can randomly decorate a block that is actually in neighbor chunk (this is assumption so far, but considering how the decorations on the edges of generated world are always half a chunk "off"...). The world-object will happily generate the neighbor chunk if it does not exist yet (so that the decorative can be placed), and this generation does not yet include decoration; otherwise it could get into recursive infinite loop.
Thus, consider these events:
1. Have an already created a chunk (with no lake now or ever) and now decorating it, the decoration can "spill" into next chunk.
2. The other chunk's "base" gets created, without lake at this point, even if it will later have it.
3. The decorations get placed in that chunk, finding the ground at nominal level (e.g. 64 for the "overworld").
4. Later the other chunk will be decorated, too, now getting the lake it is supposed to have. Lake generation carves blocks out upto the ground level, replaces with water and air. And leaves the grass (and/or trees etc.) intact.
I added specific debugging messages to see when and where the game was generating grass and lakes, in a specific area I knew would have a lake with floating stuff. Results looked like this:
Generating grass in -218, -39, 64
Generating grass in -218, -37, 64
Generating grass in -218, -35, 64
Generating grass in -216, -38, 64
Generating grass in -215, -32, 64
Generating grass in -217, -41, 64
Generating grass in -213, -29, 64
Generating grass in -217, -29, 64
Generating grass in -219, -37, 64
Generating grass in -219, -38, 64
Generating grass in -216, -30, 64
Generating grass in -211, -41, 64
Generating grass in -215, -40, 64
Generating grass in -209, -41, 64
Generating grass in -208, -39, 64
Generating grass in -213, -41, 64
Generating lake at: -222, -44, 63 (+16, +16 for area covered)
Generating grass in -215, -30, 64
Generating grass in -208, -40, 64
Generating grass in -212, -40, 63
Generating grass in -212, -41, 64
Generating grass in -214, -32, 63
Generating grass in -210, -39, 63
Generating grass in -214, -30, 64
Generating grass in -216, -29, 64
Notice how grass gets created at height 64 over the future lake's area first, then the lake is created, and some grass being planted later can also get to the one block lower height (lake edges).
Have fun figuring out how to fix that! Took 2 hours to figure out the reason, it is 5 in the morning, I'm off to bed.
Couldn't the lake generation and lake edgeing code simply check for grass and flowers on/over the blocks it is changing and remove them?
Sure, they could, but that would be only a workaround (i.e. removing the symptom), bound to cause new problems sometime in future. It is always better to try to fix the cause (in this case the incorrect order of generation of various features).
Also, that workaround would only fix the flowers and grass (single block stuff, always immediately above the blocks cleared by the lake). What about melons, pumpkins, mushrooms. Then sugar cane and cactus (can be taller than one block, but still "easy" being in single column). But what about trees? Their removal is very difficult after they have been created. Or parts of temples. (And I'm even leaving out something just to let people start thinking what it might be, and realize what kind road of traps that path will be.)
Or whichever future terrain feature not known yet.
And there are some problems even underground (rare though).
The idea is, one does not want to code "exceptions" (not talking about the concept for error handling in various programming languages) and/or spread knowledge about features into other features; that is, lake generation should not need to know anything about any other features (or other features about lake generation). It makes the maintainability of the code base difficult, slow and expensive. Minecraft is already quite a big mess in that way. It would be better to try to make things right instead of adding yet another knot into that mess.
Edit: If they fix the cause (so that the lakes would always get generated before those other features), all the details/exceptions/knowledge about other features becomes unneeded. It would be sort of easy solution. Unfortunately, ensuring that order in all cases won't be that easy due to the way the terrain generation has been designed.
Basically, the choice is between possibly difficult but right and better for future vs. semi-easy-to-difficult but wrong and pain in the future. (The variable difficulty for the latter comes from whether they decide to ignore the difficult trees and such or not).
Wouldn't it be the best solution to generate lakes, villages and whatnot first and then generate decorations.
Same issue with sand generating while floating. It does not receive an update, therefore it does not correct its problem.
Kevin, as I wrote (perhaps a bit unclearly), that would indeed be the best solution, but also possibly very difficult to implement. The way the world is generated is quite "messy", and getting the process absolutely right is near nightmare, if not even impossible.
(EDIT: A further thought into the issue, and realized the following alone won't fix it..)
I personally might even go with a bit of brute force and ignorance; generate the first (non-decoration) stage a couple extra chunks more "outwards" than where the second (decoration) stage is being done. Even this might not be enough for the most kinkiest or largest features (if there are any such), but at least the current decoration process (which only covers relatively small range) would be fully covered and thus cause no issues like this. This brute force solution would incur a bit more terrain generation overhead (both processing and memory) than now, but not radically more so.Xavier Brown: yes, if the relevant terrain features remove stuff under sand, that sand is not given an update. However, I've seen on one map that at least near the spawn point, the local floating sand always fell down after predictable delays (in two sequences); I was regenerating the world several times for another bugfix testing, so I saw the sand falling as many times. However, I've also seen some locations were the sand never falls by itself. (Also, the floating grass can slowly go away as they get the random world updates, etc.)
We actually like the quirks like this.
Still present in 1.6.4 and 1.7.x
Will this be resolved in a future version?
Too bad that this gets a "won't fix."
(If possible , I attached a screeny of me finding a double fern on sand)
I encountered a case in 14w11b where the flowers that were generated on gravel uprooted themselves before I even saw them. Was this just a chance occurrence, or was something fixed between now and February 2013?
It (and other variants of the same kind) is quite common stuff, and as mentioned few comments above, Mojang has decided to "won't fix".
EDIT: read the comment too quickly... The automatic uprooting isn't part of the issue or "won't fix", of course, but afaik it has been around for quite a while, too; it just depends on random chance when a block update happens or if the player does something that causes a block update for the flower. The same applies to many other bugged world generation issues like floating sand/gravel, non-flowing water blocks, etc.
Alright thanks. I guess I'm not fully read up on when block updates are executed (and as I understand it, and as you've said, there is a random element in there somewhere).
Actually would be incredibly simple to solve this, have done so in a Bukkit world generator before, which uses the same basic chunk generation system. The solution is simply to do the following:
1) chunk a gets generated
2) checks all 8 chunks around it (3x3 chunk area not including itself)
3) for any of these chunks which is also surrounded by 8 loaded/generated chunks, populate/decorate it.
(You MUST make sure to populate/decorate things in the right order per-chunk).
I find this method does not cause much lag (even on a laptop), works every time (no chunks without decoration/structures), and so far NEVER produces any issues. It even fixes the thing where trees in cold biomes can sometimes be half-covered in snow and the other half is underneath it.
For strucutres that could potentially take an area that sticks out of that 3x3 chunks area, simply increase to a 5x5 chunks or more area for those particular structures. Since it doesn't generate one super-often, the potential lag from this many checks would be probably un-noticeable on a decent computer.
PS: as for why I actually need to leave a 1 chunk no-decorate/populate border around things, it causes other issues if I don't
PPS: it seems there is something like this in Minecraft already, explaining why trees never get cut off on chunk borders, and how larger-than-a-chunk structures generate properly, but it doesn't seem to be fully implemented in the way I have suggested, as there are some issues, as we have seen here.
@Conor McS
Your suggestion is a decent compromise, not too much CPU/memory load, yet significant reduction on visible issues.
The existing check is more of half-a-chunk thing. Sort of; the decoration process happens with half-chunk shift compared to chunk generation. That causes its own issues.
The large structures (like mines, caves and villages) work out semi-properly because they can be generated for any sub-section at any time, even if the rest of it are still in area that is not generated. (Though the way they are generated is in most cases rather inefficient, but that is another story). "Semi-properly" - e.g. the issue where farms in villages had weird leaking water was caused (partially) because of the combination of decorating with half-a-chunk shift and only smaller area at a time.
The method you described was in my mind back then, too, but it doesn't scale properly. As you already mentioned, larger structures would need larger "buffer", e.g. large caves/mines could very well not generated until the player has traveled almost half way through their area... pop a cave entrance appears under your feet and you fall to your death. To avoid such side-effects, the chunk generation area would need to be extended accordingly, and that is not cheap.
Also, another issue is that the decoration should be done in multiple iterations, depending on the natural order things would have happened. In a way it already does so (iirc, the decorations are added in two different groups, and in specific order), but it doesn't cover all random combinations correctly.
Theoretically the extension of both generation distance and the checking buffer distance is the only "correct" way to do it. It is just one of the cases where theoretically correct is too hefty for CPU/memory.
When will people realise that '@' tags don't do anything on here?
Anyway, I have seen no issues so far with caves and similar things, as they appear to be generated chunk-by-chunk, in the same sort of way that rivers are, so as long as the player has a view distance of more than 1 chunk (smallest in vanilla is 2 chunks), there's no risk of falling into one due to it suddenly appearing. Also even on my slow laptop, with view distance set to 16 and server-side view/generate distance set to 2 chunks, I never see any trees just popping into existence on already-generated terrain. Also I somehow managed to make snow appear under AND on top of trees in snow biomes. Pretty much all the issues you mentioned don't seem to actually happen using my exact code.
PS: what you said about large structures being able to generate from any section at any time, This cannot be true, as a structure is saved as a single data file in the world, with a single x,z coordinate location, and will only generate the structure itself when that data file exists, which is generated along with the chunk that its x & z center coords lie in. I actually have seen large structures just pop into existence in vanilla.
PPS: if viewing a world in MCEdit, you can sometimes see 1-chunk-thick border with no decorations, so some part of this half-chunk-offset thing does actually leave some kind of border, I guess it isn't perfect though.
(at) Conor
(I actually do not use any web-thingy where @ would be any kind of tag. Or any thingy which would use #. Oh wait, Yammer at work, uses both iirc, ...)
Of course the @ does not do anything here, I'm merely following what others do, for whatever reasons they use it
Anyway, caves are indeed generated chunk by chunk. I was describing what could happen if the idea you have was extended to handle larger things (like caves, if they were actually generated as one large thing at once). Any really good idea should be extendable like that, I merely pointed out how it doesn't (or well, does, but with bad resource needs). (I also did mention that as a compromise, your idea at the scale you mentioned does work just fine, and since Minecraft is already full of compromises, lots of bad ones too, your one should fit in just fine.)
Snow both under and top of trees is likely the side-effect of the half-chunk shift, but I have no idea how, as so far, looking at maps, it seems that ground snow is also placed later (it has the same half-chunk shift and delay).
PS: The large structures at anytime - It sure is true, I just checked some old map of mine, which had a suspicious looking village at the edge of generated area. I loaded the world, traveled to that village, and looked the map again. Now it had the full village. It actually had been partially generated so that even some of the houses were cut. (This same partial generation of villages has, at times, caused funny stacked half-houses -effects, leaking farms, etc., due to other bugs messing things up.)
Hmm.. there is a chance that I had already traveled far enough to reach that "center" point and thus the necessary data to generate its structures existed already. I couldn't find a map with only a smaller corner of village waiting, and no time to specifically test with new world now.
In any case, the game can generate villages chunk by chunk, though it could start with a larger part.
PPS: the border with no decoration/snow/etc. is actually half a chunk wide. I have looked at that part of the code quite a few times as part of trying to resolve multiple bugs, but I still can't get my head quite around that thing.
Any chance someone can link me to an unobfuscated chunk-by-chunk cave generator? I want to use it for something, all I have at the moment is something which generates caves as whole objects.
Conor McS:
Linking to a ready unobfuscated MC code (even a large snippet like that) would likely be a copyright violation. Well, not the linking itself I guess, but anyway, better not to support such activities. However, Mojang currently seems to give somewhat "ok" if you do it yourself with "MCP" from your own legally acquired copy of the game files.
At least the last time that I looked at that code, it didn't create the caves chunk-by-chunk. It always created any and all whole caves that possibly could touch the chunk being created. (Partially the reason for its "heaviness"). Edit: the whole caves are not created/generated, per se, when just doing one chunk, but the algorithm may end up going through their full span in order to find out whether it touches the chunk or not.
Also, a comment in an unrelated JIRA issue (this issue is about badly generated surface features) might not be the best place to ask for even non-MC-originated version of such generator.. You should probably take a look at a suitable section in some forums instead, your request would be seen probably by about 1000 times more people...
In Superflat worlds, this incorrect placement seems to depend on the order in which structure types are specified. For seed -7993066103807340761 the following preset generates grass on the gravel roads (otherwise impossible) in the village around -468, 64, 194 given the following preset:
3;1*minecraft:bedrock,59*minecraft:stone,2*minecraft:dirt,1*minecraft:grass;1;decoration,village,mineshaft(chance=0.01),stronghold(chance=32 count=3 spread=3),biome_1(distance=32),dungeon,lake,lava_lake
The impossible grass persists until the gravel is dug up or a redstone block (even a lamp with no inputs) is placed nearby. The following preset generates the same village, but with the grass already uprooted (and, accordingly, with extra dropped seeds sitting on the roads):
3;1*minecraft:bedrock,59*minecraft:stone,2*minecraft:dirt,1*minecraft:grass;1;village,mineshaft(chance=0.01),stronghold(chance=32 count=3 spread=3),biome_1(distance=32),dungeon,decoration,lake,lava_lake
This glitch is a rare glitch in Minecraft 1.8+
I just found this glitch in the new snapshot 15w31c in a village
Confirmed in 16w39b
Confirmed in 16w39c
Confirmed in 16w40a
Confirmed in 16w41a
Confirmed in 16w42a
Confirmed in 16w43a
Confirmed in 16w44a
No need to update postponed tickets, as a fix won't be attempted any time soon.
Confirmed in major release 1.11
Let's just agree to disagree with Mojang
. They clearly stated these kind of quirks are a signature feature of the game's engine; see one of the earlier comments.
Can someone please close this bugreport?
This ticket was reopened and assigned to [Mojang] Grum (Erik Broes), which means that the developers (at least one of them) think that this bug needs to be fixed. This ticket won't be closed unless the issue gets fixed or the devs say to do so.
Still happens in 1.13-pre6, much more regularly even. It's been years now and we just got a major overhaul of the entire world generator in 1.13. Now would be a great time to finally fix this.
It might actually be related to
MC-132283andMC-124989.found tree generated on patch of sand in pre 10
I don't know if this is a known part of the bug, or another bug, but I've found multiple cases of grass growing directly on top of other grass.
(The screenshot I've just uploaded has an example of this, along with other floating grass, and also includes both the seed and coords)
This seems to happen quite frequently with water ponds in savanna biomes.
Confirmed for 1.13.1.
Confirmed for 1.13.2-pre2.
Confirmed for 19w04b
Confirmed for 19w07a
flower right next to spawn seed is: 6331652741370124972
Also confirmed for build 19w09a. Map seed -882114519412305203
Minecraft 19w11b
Still in 19w13b and 19w14a
Still in 19w14b and 1.14 Pre-Release 1
Still in 1.14 Pre-Release 2
Still in 1.14 pre-3, 1.14 pre-4 and 1.14 pre-5
Confirmed still in 1.14 release.
(edit: changed inline image to external link for readability)
https://i.imgur.com/uQbrR8S.png
Still in 1.14.1 Release
can reproduce in 1.14 and 1.14.1
Can reproduce in 1.14.2 Pre-Release 1
Still in 1.14.2 Pre-Release 2
Still active in pre-release 2 of 1.14.3
Still in 1.14.3
Still in 1.14.3.
It's not just a cosmetic issue. I fell through a patch of floating snow into a lava lake while carrying two large, filled out maps. I was not happy.
Question: I am not watching this bug report but keep getting email notifications for this bug. How can I turn this off?
Still exists in 19w34a
1.14.4 the grass also spawns inside houses in villages
Emily, that seems to be another issue which is tracked in MC-140727.
Confirmed in 19w45b.
As you can see:
bug is still not fixed.
This is very important in fact, because such "floating" layer of snow can be above the lava lake, unfortunately I felt that sorrowful moment on myself, falling through transparent snow into the lava and died, lost all good stuff.
Found my last year world and re-created it:
Oh and seed -294883631847010 XYZ: 642 / 67 / 744
While quirks can be interesting, this one is just ugly... not to mention dangerous in the case of floating snow over lava - a jarring reminder this bug is more than annoying. It'd be really nice to see this fixed when it comes to grass, snow, etc.
Seed -4983198545228022230
Right by spawn
This still happens in 1.15.1
Still happening in 20w10a
Confirmed in 20w16a. Grass can even spawn on path blocks
How is it possible that such a simple bug has lasted so long?
Comfirmed in 1.15.2,20w20a,20w20b,20w21a.
I can't believe that it takes so long for Mojang to not fix this bug. Bug is so annoying and visually easy to spot and i don't understand why they avoid to fix it.
Bamboo and ferns also work
Affects 1.16
Still affects 1.16.1
Don't think we need any more screenshots?
Mojang Priority is important (but secretly l o w)
Maybe they will fix that in 1.17? Because the Mountain Update is coming, they will partly change the generation
Worldgen has been (semi-)overhauled many times since 1.4. I'm not sure why this bug is Important, it's a bit of a quirk, doesn't affect any gameplay. I'm assuming that they'd like to fix this (at least to free up some time for the mods marking duplicates) but the risk / chance of a fix causing more bugs is probably not worth it.
MMK21, that is not quite true. I've seen deaths by lava because of this bug (snow in the air that didn't melt yet).
Grass can also replace parts of trees.
I think that this has even caused hardcore deaths just because the snow doesn't has melted yet
I'm not a MC dev, but a fix should just require checking for grass or snow above air blocks. I expect this would add some small load during chunk generation, but it isn't the same as a fix for suspended sand/gravel (which IMHO would be recursive in nature). Not that the latter is the same kind of problem, but it's another example of generate-then-sweep behavior.
this also occurs on seed -4977636324086404853 at 49, 71, -79, on 1.16.3
Please use the subreddit for discussion.
Please don't attach any more screenshots to this ticket. Thank you.
And was already said, if you want to discuss this issue please do so on /r/Mojira, not in this comment section.
Can confirm in 20w48a.
This can happen with amethyst geodes as well.
Can confirm in 20w49a.
As I said a year and a half ago, how do I turn off email notifs for this when I'm not even watching it?
Nixinova, if you have (or don't mind to get) an access to Discord, the official help channel for this "Mojira" is there: https://discord.gg/rpCyfKV
Might also manage to work it out via https://www.reddit.com/r/Mojira
I.e. try and get some mods to get some Mojira admin (probably Mojang staff) to check things out. Perhaps there is some glitch going on or some deeply buried setting or whatnot.
Nixinova, try watching the bug report and unwatching it again, I assume this is a JIRA bug. If that doesn't solve your issue, please contact me via Discord.
This happens to me if plant generates on sand and gravel and other block that generates in-natural.
Also the plants and grasses are floating on air
This affects other latest snapshot, if it could be fixed above the future.
Also in 51a.
21w03a.
Dylan Way: please stop posting unhelpful comment.
Can confirm in 21w05a.
Can confirm in 21w05b.
Can confirm in 21w08a
Also not only gravel and sand patch generation is affected by this, also structures like villages can let grass generate in locations it shouldn't
Can confirm in 21w08b.
Acacia villages have this EVERYWHERE! mostly just grass in the houses and floating water in the farms.
As of 21w10a, this happens with cave vines too.
If the snow generates floating it may even prevent you from noticing that the lake is there. Here is another example:
Can confirm in 21w13a.
This happens because terrain features such as lake_lava, lake_water, disk_gravel, disk_clay and disk_sand are applied after features such as trees and grass, causing them to appear in incorrect places. Fixing this would be fairly trivial, by making such features that change the terrain be applied before features that simply add things.
Can confirm in 21w14a.
Can confirm in 21w15a.
I created a collection issue in
MC-223305with ways to fix several world generation bugs, including this one.Can confirm in 21w16a.
In 21w17a
Can confirm for 21w17a
lol, bug since 1.4.2 and still not fixed.
In 21w18a
I think
MC-125858andMC-129153should be merged to this report because I believe they're the same issueThis has now been fixed for everything except trees. For any remaining or reintroduced issues, please open new and specific reports with new repro steps.
No joke, i have been waiting this bug to be fixed for years. Well done guys.
LET'S GOOOOO, this is one of the two bugs that I've always wanted fixed the most in the entire game, this is literally a dream come true for me, thanks so much slicedlime!
Oh my god they actually fixed it. I never thought I'd see the day.
Please keep this issue free of any additional comment.
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do we open up a new issue for the tree thing then?
as it wasn't fixed actually, it may be reopened, however the fix works... But not always
Please open a new issue with reproduction steps for any case which does not seem fixed. We will link the new ticket to this issue.
Not properly fixed. I assume this means the "fix" made the symptoms 99% less common, but new tickets have been opened for supposedly fixed aspects of this bug:
MC-225843(snow layers over lakes and lava)MC-225842(Flowers over lakes)MC-225850(Grass, tall grass, flower, double flower, fern, large fern, and tree can generate on sand or gravel)I'm just working off the "bug reports new as of 21w20a" page:
https://www.reddit.com/r/Mojira/comments/ngaymy/bugtracker_report_21w20a/
Tokes The tree one is MC-225839 it is marked with 1.16.5 since it wasn't actually fixed with this report so you won't find it in the reddit report
Does that appear on the same seed in an unmodified client (no Optifine)?
Edit: If so, you might be experiencing MC-140727.
为什么1.16后草有时能浮空的bug又重新存在了呢？
Why can grass sometimes float after 1.16? Why does bug reappear?
Because it was fixed after 1.18 go to later versions.
i have seen this before in 1.19.2
For any future or present worldgen issues similar to this, please create a new bug report if none exists yet.
Relates to
MC-280100