Vertical biome smoothing causes surface biomes to appear 3D in some cases
The bug
Some surface biomes can still appear 3D due to biome smoothing also being applied on the Y axis, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like that
Side effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens. - Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended". - This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
- Other biomes overlapping mushroom biomes cause mobs to spawn in them, making this bug an aggravating factor of MC-93271.
Visual analysis
Analysis of an intersection between desert, savanna and eroded badlands biomes. I placed a terracotta block where the biome was eroded badlands, dirt where it was a savanna and sandstone where it was a desert. The original screenshot is also attached.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
Linked Issues
is duplicated by4
relates to4
MC-93271Mushroom island ocean overlapping other biomes causing mobs to spawn on mushroom islands
LowMC-242638Stone, dirt, and grass blocks can generate along the edges of badlands biomes when rivers are nearby
NormalMC-257570Exposed cave biomes cause issues with rain near dry or snowy biomesLowMC-209558Biome borders on client are inconsistentLowAttachments18
- Unresolved
![[Mod] ampolive](../../../data/avatars/users/18949.svg)
[Mod] ampolive
user-30ce1- 40
- 20
- Confirmed
- Normal
- Platform
- World generation
- biomes mojang_internal_1 networking
1.17.1 - 1.21
1.17.1 21w38a 21w40a 21w42a 21w43a 21w44a 1.18-pre1 1.18-pre2 1.18-pre4 1.18-pre5 1.18-pre6 1.18-pre7 1.18-pre8 1.18-rc1 1.18-rc3 1.18-rc4 1.18 1.18.1-pre1 1.18.1-rc1 1.18.1-rc2 1.18.1 22w03a 22w05a 22w06a 22w07a 1.18.2-pre3 1.18.2 22w12a 22w14a 22w15a 22w19a 1.19-pre1 1.19-pre5 1.19 1.19.1-pre5 1.19.2 22w44a 22w45a 22w46a 1.19.4 1.20.1 1.20.2 1.20.4 1.21
Created Issue:
Some 3d biomes issues can still happen.
The Bug:
Some surface biomes can rarely still appear as 3d.
Expected Result:
Only cave biomes should be 3d.
In this case, the conflict was with "plains" and "savanna" biomes.
Attachments2
The Bug:
Some surface biomes can rarely still appear as 3d.
Expected Result:
Only cave biomes should be 3d.
In this case, the conflict was with "plains" and "savanna" biomes.
Also, here's the seed and the coordinates:
3029700
/execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
hknibergNormalThe Bug:
Some surface biomes can rarely still appear
as 3d.Expected Result:
Only cave biomes should be 3d.
In this case, the conflict was with "plains" and "savanna" biomes.
Also, here's the seed and the coordinates:
3029700
/execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
Some3dbiomesissuescan stillhappen.Some surface biomes can still be 3D in some cases
The bug
Some surface biomes can rarely still appear 3D.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
The bug
Some surface biomes can rarely still appear 3D.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25The bug
Some surface biomes can rarely still appear 3D, causing biomes to vertically intersect and cause numerous issues, such as stone and dirt generating in hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
The bug
Some surface biomes can rarely still
appear3D, causingbiomesto vertically intersect and cause numerous issues, such as stone and dirt generating in hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as stone and dirt generating in hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as s
tone and dirt generating inhoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as surface builder blocks generating in the middle of hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as
surface builder blocks generating in the middle of hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as grass, dirt, stone and ores generating in the middle of hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 3029700 Coordinates: /execute in minecraft:overworld run tp @s 12548091.30 97.00 12552544.70 393.30 71.25
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as grass, dirt, stone and ores generating in the middle of hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed:3029700Coordinates: /execute in minecraft:overworld run tp @s12548091.30 97.00 12552544.70 393.30 71.25The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as grass, dirt, stone and ores generating in the middle of hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
hknibergThe bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as grass, dirt, stone and ores generating in the middle of hoodoos, plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.
Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as grass, dirt, stone and ores generating in the middle of hoodoos (
MC-241539), plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
is duplicated by
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect and cause numerous issues, such as grass, dirt, stone and ores generating in the middle of hoodoos (
MC-241539), plants and leaves changing color on mid-air, et cetera. Even if this was previously intended, this should no longer be the case as described below.Note that one of the side effects of this bug, water color randomly changing with height (
MC-237312) was resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Side effects
- Grass, dirt, stone and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them (
MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Side effects
- Grass, dirt, stone and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them (
MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Side effects
- Grass, dirt, stone and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them (
MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatTo reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, stone and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them (
MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
![[Mod] tryashtar](../../../data/avatars/users/41963.png){kind=small}
is duplicated by
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, s
toneand ores generate in the middle of hoodoos, as blocks of other hot biomes replace them (MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them (
MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
image-2021-11-20-08-52-31-215.png
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them
(MC-241539).- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. This is mostly fixed with the fix of
MC-241539.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
![[Mod] Les3awe](../../../data/avatars/users/79847.png){kind=small}
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
relates to
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them.
This is mostly fixed with the fix ofMC-241539.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
The bug
Some surface biomes can rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
Visual analysis
Analysis of an intersection between desert, savanna and eroded badlands biomes. I placed a terracotta block where the biome was eroded badlands, dirt where it was a savanna and sandstone where it was a desert. The original screenshot is also attached.To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
The bug
Some surface biomes can
rarely still be 3D, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
Visual analysis
Analysis of an intersection between desert, savanna and eroded badlands biomes. I placed a terracotta block where the biome was eroded badlands, dirt where it was a savanna and sandstone where it was a desert. The original screenshot is also attached.To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90The bug
Some surface biomes can still appear 3D due to biome smoothing, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
Visual analysis
Analysis of an intersection between desert, savanna and eroded badlands biomes. I placed a terracotta block where the biome was eroded badlands, dirt where it was a savanna and sandstone where it was a desert. The original screenshot is also attached.To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
Some surface biomescan still be3D in some casesBiome smoothing causes surface biomes to appear 3D in some cases
The bug
Some surface biomes can still appear 3D due to biome smoothing also being applied on the Y axis, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
Visual analysis
Analysis of an intersection between desert, savanna and eroded badlands biomes. I placed a terracotta block where the biome was eroded badlands, dirt where it was a savanna and sandstone where it was a desert. The original screenshot is also attached.To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
Biome smoothing causes surface biomes to appear 3D in some casesVertical biome smoothing causes surface biomes to appear 3D in some cases
is duplicated by
![[Mod] SPGoding](../../../data/avatars/users/44622.png){kind=small}
is duplicated by
![[Bot] Arisa](../../../data/avatars/users/43007.png){kind=small}
is duplicated by
is duplicated by
The bug
Some surface biomes can still appear 3D due to biome smoothing also being applied on the Y axis, causing them to vertically intersect. Even if this was previously intended, this should no longer be the case as described below.
Expected result
Only cave biomes should be 3D, as per the 21w40a changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like thatSide effects
- Grass, dirt, sand, sandstone, stone, and ores generate in the middle of hoodoos, as blocks of other hot biomes replace them. Partially fixed with the fix of
MC-241539, but still happens.- Sand and sandstone generate in improper places, as beaches and snowy beaches intersect other biomes.
- Foliage such as grass and certain leaves change color on mid-air.
- Water color randomly changes with height (
MC-237312), due to surface biomes with different temperatures being sandwiched in between cave biomes. Resolved as "Works As Intended".- This could also be a nuisance for certain mob farms, as you'd have to constantly check the F3 screen if the biome is the correct one vertically.
- Other biomes overlapping mushroom biomes cause mobs to spawn in them, making this bug an aggravating factor of MC-93271.
Visual analysis
Analysis of an intersection between desert, savanna and eroded badlands biomes. I placed a terracotta block where the biome was eroded badlands, dirt where it was a savanna and sandstone where it was a desert. The original screenshot is also attached.To reproduce
Seed: 7394312107885230768 Coordinates: /execute in minecraft:overworld run tp @s -2423.43 82.00 6396.92 -145.66 57.90
relates to
![[Helper] Johnibur](../../../data/avatars/users/28381.png){kind=small}
relates to
relates to
![[Mod] Avoma](../../../data/avatars/users/86198.png){kind=small}
![[Mojang] slicedlime](../../../data/assets/gravatar/slicedlime.jpeg){kind=small}
This is a case of MC-239446.
I think that this is a duplicate of MC-239446.
Duplicate of MC-239446.
Since this is not considered a duplicate of MC-239446 despite having the same root cause, I can confirm in 1.18 Pre-release 4.
Dupe of MC-239446
And the 3D biome issue is MC-239446.
Thank you for your report!
We're tracking this issue in MC-239446, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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Marked MC-239446 as related instead; I don't think the issue here stems from 3D biomes; rather I believe the issue here is that the mesa structure crosses over slightly into a river biome.
Not completely fixed due to MC-239446.
Duplicate of MC-239446.
Thank you for your report!
We're tracking this issue in MC-239446, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
– I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.
Thank you for your report!
We're tracking this issue in MC-239446, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
This seems related to MC-239446.
The bug
When cave biomes generate exposed to the surface surrounded by a dry biome (e.g. desert, badlands) or snowy biomes (snowy plains, etc.), some weird issues occur. This is independent of other related but contributing issues, like MC-238506 and MC-239446.
For example, when moving down from a badlands biome to an exposed dripstone caves biome, it suddenly begins to rain. This does not make any sense, as the rain would logically have to come from above, and the biome above does not provide rain.
This was commented before here but I couldn't find a report (edit: I found MC-241542, which covers the vertical part of this issue).
To reproduce
- Create a world with the following seed and go to the following coordinates:
Seed: -4508336170667350008 Coordinates: /execute in minecraft:overworld run tp @s -158.82 98.60 51.38 67.35 -29.10
- Notice that you are in a badlands biome.
- /weather rain
- Wait a few seconds.
- Notice that it is not raining.
- Move down, and notice that it starts to rain, which is nonsensical.
Potential fix
This could be fixed by changing the cave biomes precipitation to be NONE (which I do believe makes sense, why would it rain underground?), but that might be undesirable for other reasons. A more difficult fix would involve checking the topmost biome or the highest biome at a certain range from the player instead of checking the biome at the position of the player.
Can confirm in 21w43a. This causes hoodoos in badlands next to deserts to generate with stones, ores, dirt and sand. This could be intended though, as a side effect of this bug was resolved as "Works As Intended" (
MC-237312).How's this different from
MC-238804? Describes the same issue, which is biomes overlapping at their edges.This was supposed to be changed in 21w40a, so that only cave biomes would be 3D, from the changelogs:
Non-cave biomes no longer change with height - so no more savannas in the sky and things like that
That does not happen though. But you're right that it is essentially the same issue. Maybe this should be resolved as a duplicate and that ticket should be reopened.
Can confirm in 21w44a.
May I request ownership of this ticket as the original reporter is inactive? Relates to MC-209558.
Clones
MC-173878.found a bug were cave biomes dont work right
May already been fixed. Correct me if I'm wrong
Not fixed.
It would be nice to have the sky biome.
Can confirm in 1.18 Pre 5
Seed: -4542431585794183865
Location X Z: 2140 1995
Updates not even nearly ready
if the devs go on for the 30th
Unless there trying 3D again but not working as intended if so when they do I will be very happy loved mixed cliffs
This is actually pretty important because it causes
MC-241539even after the fixI can confirm that this still occurs in 1.18 Pre-Release 5.
This issue still occurs in 1.18 Pre-Release 7. In the screenshot I attached to this report, I stacked two jungle leaf blocks on top of each other. The bottom block is in a beach biome and the top block is in a taiga biome.
This issue still occurs in 1.18 Pre-Release 8. The player can reliably reproduce it by going to a border between two biomes, opening the F3 screen, and flying up or digging down.
the values stay the same based on how high it stays so multi noise is not to blame for biome bug
dan hop You are correct, the multinoise values don't seem to change vertically for overworld surface biomes, so something else is causing this bug.
Great visual analysis! It puts the issue into perspective very well.
[Mod] ampolive The "something else" is just the smoothing out of biome borders since 1.15; rather than saving the biome for each block, it's saved for every 4x4x4 blocks, and borders smoothed after loading it. It's the same smoothing as on XZ axis.
user-f2760 I see, thanks.
Dhranios thanks for the helpful info!
I am a bit confused, though. When I first found out about this bug, I tried to reproduce it in a 1.17.1 singleplayer world, but I was not able to. How rare was this bug pre-1.18?
It may have been less extreme, but it was definitely there.
Oh ok, thanks for clarifying!
Unrelated, but I can confirm that this issue still occurs in 1.18-rc3.
This still occurs in 1.18-rc4.
Also, I believe the large biomes setting makes this bug more severe. I was playing in a large biomes world and noticed that between a taiga biome and a river biome, there was an 8-block wide zone and an 11-block wide zone in which going up or down switched the biome between taiga or river.
I haven't done much testing, so I don't know for certain that large biomes intensifies the bug, but I believe it does because I don't remember seeing such large transition zones in default worlds. In default worlds, these zones where moving vertically changes the biome seem to be only a few blocks wide, though it is possible they are wider and I just didn't notice.
If this bug is fixed in a future version and I upgrade a world from 1.18 to that future version, will the vertically changing biomes still be in the world? I'm thinking they won't be, since the biome blending is applied after loading, but I just want to make sure before starting any long-term 1.18 worlds.
It should change then, as th biome is saved per 4x4x4 blocks, if y changes no longer change blending, the save data shouldn't have to change.
1.18.1 pre 1
Something I noticed about 1.18 is that, according to my experimentation, it fixes the root cause of MC-209558, since client biomes now seem to match server biomes. I believe this because in a newly generated chunk in a 1.18 server, I found a badlands hoodoo with stone in it. When I investigated, I found that the stone corresponded with a river biome while the terracotta corresponded with the badlands.
However, because of this vertical biome smoothing bug, the effect of MC-209558 (biomes changing by y-level) still persists, except that this is present both client-side and server-side.
Confirmed for 1.18.1.
Can confirm in 22w03a.
To add to the complaint list, this makes mobs spawn on blocks that otherwise seem to be within the boundaries of a mushroom island.
Don’t know if this is to do with this but if you use datapacks to change cave biome noise settings it reverts part of the area to surface biomes not the set cave biome
No, that's not related.
It works both above ground and below
as well as to the side
Sure the random cave biome Y range is cause by this this because if you set biome range to a fixed y range only it still does it
I've noticed monsters spawning on mushroom biomes and MiniHUD showed ocean biomes are often created above mushroom biomes, especially around the edges of the mooshroom island. I suspect this bug report is related.
Cries That bug is being tracked in MC-93271.
Can confirm in 23w07a.