kruthers
- kruthers
- kruthers
- Europe/London
- Yes
- No
Overview
When using a spawner minecart with a spider as the spawn potential, it has a chance to spawn a spider jockey, when this happens the game will crash with the error:
"The game crashed whilst exception ticking world
Error: java.lang.IllegalStateException: Entity is already tracked!"
It only effects spawner minecarts not normal spawers eitherFrom testing it looks to only be spider jockeys causing it not any other jockeys
Recreate
Summon the following spawner in:summon spawner_minecart ~ ~ ~ {SpawnCount:20,MinSpawnDelay:50,MaxSpawnDelay:100,MaxNearbyEntities:100,RequiredPlayerRange:16,SpawnData:{id:"minecraft:spider"}}If you summon a few in a give it a minute or 2 the game will crash, when your relog you will see a spider jockey has just been spawned in.
Overview
When using a spawner minecart with a spider as the spawn potential, it has a chance to spawn a spider jockey, when this happens the game will crash with the error:
"The game crashed whilst exception ticking world
Error: java.lang.IllegalStateException: Entity is already tracked!"
It only effects spawner minecarts not normal spawerseitherFrom testing it looks to only be spider jockeys causing it not any other jockeys
Recreate
Summon the following spawner in:summon spawner_minecart ~ ~ ~ {SpawnCount:20,MinSpawnDelay:50,MaxSpawnDelay:100,MaxNearbyEntities:100,RequiredPlayerRange:16,SpawnData:{id:"minecraft:spider"}}If you summon a few in a give it a minute or 2 the game will crash, when your relog you will see a spider jockey has just been spawned in.
Overview
When using a spawner minecart with a spider as the spawn potential, it has a chance to spawn a spider jockey, when this happens the game will crash with the error:
"The game crashed whilst exception ticking world
Error: java.lang.IllegalStateException: Entity is already tracked!"
It only effects spawner minecarts not normal spawersFrom testing it looks to only be spider jockeys causing it not any other jockeys
Recreate
Summon the following spawner in:summon spawner_minecart ~ ~ ~ {SpawnCount:20,MinSpawnDelay:50,MaxSpawnDelay:100,MaxNearbyEntities:100,RequiredPlayerRange:16,SpawnData:{id:"minecraft:spider"}}If you summon a few in a give it a minute or 2 the game will crash, when your relog you will see a spider jockey has just been spawned in.
When holding shift you are unable to fall off blocks which is normal but in 1.15.2 and below when you had levitation you were able to float off them. This has changed in 1.16.2 with this no longer being possible, instead you get stuck on the edge of the block.
To recreate this
- open 1.1
5.2 go into a world with cheats enabled.- Then find a drop of a few blocks
- give yourself levitation 255 `effect give @s levitation 10000 255`
- Hold down shift and walk off the block.
Now repeat int 1.16.2.In 1.15.2 you can walk off the block and stay floating where in 1.16.2 you get stuck and are unable to.
When holding shift you are unable to fall off blocks which is normal but in 1.15.2 and below when you had levitation you were able to float off them. This has changed in 1.16.2 with this no longer being possible, instead you get stuck on the edge of the block.
To recreate this
- open 1.16.2 go into a world with cheats enabled.
- Then find a drop of a few blocks
- give yourself levitation 255 `effect give @s levitation 10000 255`
- Hold down shift and try walk off the block.
In 1.15.2 you can walk off the block and stay floating where in 1.16.2 you get stuck and are unable to.
Hi this bug is for 1.16.2 as its something that happens in 1,15 but not 1.16 but should be
In 1.16.2 when you have levitation and are shifting you are unable to float off the block you are on. This is possible in 1.15.2 and you are able to walk off it but not in 1.16.2
Recreation
- Open 1.16.2 go into a world with cheats enabled.
- Then find a drop of a few blocks
give yourself levitation255`effect give @s levitation 10000255`- Hold down shift and try walk off the block.
In 1.16.2 when you have levitation and are shifting you are unable to float off the block you are on. This is possible in 1.15.2 and you are able to walk off it but not in 1.16.2
Recreation
- Open 1.16.2 go into a world with cheats enabled.
- Then find a drop of a few blocks
- Place a block above you head
- Give yourself levitation `effect give @s levitation 10000`
- Hold down shift and try walk off the block.

can you add the lates versions on as i am finding this bug in vestion 17w17b
i added an image showing where the game thinks the hit box is and where the hut is itself the game can only spawn witchs in the overlap of the hitbox and witch hut
also the hit box will always start at y=64 i found in my tests this is and inportant bit of missing info
It seems to affect all types of chunk population including snow layers
The title of this bug is very confusing as it refers to 2 bugs as from testing when you are in chunks that are been loaded by another player or in the spawn chunks the chunks are still loaded (as shown by the images) and executing commands in them (like execute if block) will still detect blocks there, but once you travel out into chunks that are not being loaded by another source then they do not load.
Hi sorry, completely forgot to add the crash reports first time round they have all been added now: crash-2020-06-27_11.20.14-server.txt
https://bugs.mojang.com/browse/MC-192296?focusedCommentId=747125&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-747125
Replying to: https://bugs.mojang.com/browse/MC-199313?focusedCommentId=798591&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-798591
Hi this bug is for 1.16.2 as its something that happens in 1.15 but not 1.16 where it should
Creating new report
I Have updated by bug report to explain how todo this without levitation 255.
https://bugs.mojang.com/browse/MC-199315?focusedCommentId=798612&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-798612
https://bugs.mojang.com/browse/MC-199315?focusedCommentId=798618&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-798618