The bug
Villagers, zombie villagers and passive mobs inside villages are spawned into the world one block too high. This causes them to occasionally get stuck, especially since they also are shifted into the wall occasionally.
All types of villagers are affected (unemployed, nitwits, babies, and zombie villagers). Also, all biome variants of villagers are affected.
How to reproduce
Create a world with the seed
5322602735514886292Run
/setblock ~ ~ ~ minecraft:repeating_command_block{auto:1b,Command:"execute as @e[type=villager,nbt=!{NoAI:1b}] run data merge entity @s {NoAI:1b}"}Run
/tp @s -5967 68 2598Look around
→ ❌ You will notice that all villagers are floating inside of the air, and the villager near/tp -5986 68 2555even is stuck inside of the wall of its house
If you reproduce this without the command block, most villagers will be able to roam around freely, but some still are stuck in walls.
[media][media]
See another example in this comment.
The cause
All villagers in the villager structure files are spawned on top of the jigsaw block instead of inside of it. Also, some villagers (especially baby villagers) spawn with their hitbox partially outside of the block they're standing in.
[media][media]
[media]
Linked issues
is duplicated by
MC-142397
Floating Villagers
MC-148303
Desert villagers spawning mid-air, stuck with their heads inside of the roof block
MC-148549
The villagers who get up from the bed of some houses in the desert village get their heads in the ceiling
MC-150060
Villagers in Desert villages get stuck in shorter houses
MC-152920
Vilagers spawn ontop of blocks with head inside block.
MC-155018
Villagers spawn stuck in the slab roofs sometimes
MC-165626
Villagers and animals sometimes in villages spawn at wrong location
MC-166612
Villager Spawns on Bed and Suffocates
MC-168841
villagers spawn in walls
MC-178760
Desert villager glitch
MC-181684
Villagers can spawn in desert villages roofing
MC-189468
A snow village structure spawns with a villager drowning
MC-200517
Villagers get stuck in blocks
MC-201563
villagers in snowy tundra
MC-202812
Some villagers in desert are standing inside the wall
MC-217483
Disturbing villager spawnpoint
MC-234108
Villages Homes in snow biomes kill Inhabitants
MC-239239
Repeated 'Villager suffocated in a wall' output messages directly from snow huts
MC-260802
When desert village is spawned, 1 of 2 sheep are instantly killed in Shepherd's House 1
MC-274506
Villagers spawn stuck in walls 村民生成时卡在墙里
MC-277769
Villagers can sometimes spawn in blocks
MC-297629
Villagers taking themselves out by standing on bed in snow village.
Attachments
Comments
migrated
migrated
Affects even their animals
Justerfrog
confirmed for 1.15.2
migrated
Seeing this in 20w18a.
Avoma
Can confirm in 1.17.1 Release Candidate 2.
ampolive
Can confirm in 21w40a.
bdm68
Confirmed in 21w43a. I reproduced this by generating a large area of terrain using a redstone mechanism. Occasionally the log gets messages about villagers suffocating and includes coordinates. The coordinates turned out to be villager houses.
ampolive
This also affects zombie villages. Can confirm in 21w44a.
ampolive
Can confirm in 1.18 Pre-release 1.
ampolive
Can confirm in 1.18 Pre-release 4.
Moesh
I have confirmed this and have a solid repro case. I think it is OK to just keep adding the affected versions instead of leaving comments.
3984153921072542614
/execute in minecraft:overworld run tp @s 2778.34 74.16 12476.52 289.83 27.30
ampolive
This issue isn't exclusive to villagers, I just witnessed two cows spawn floating on generation and one of them got stuck in a wall and died.
pulpetti
In 1.19 Pre-2.
Brain81505
Can confirm in 23w03a
migrated
i confirm in 23w04a. the seed is -8347609665039207485, and the location is /execute in minecraft:overworld run tp @s -3647.30 65.00 6011.57 685.17 79.95
Geoffreylikespie
With the new /tick command's functionality, I think this bug could finally be fixed relatively easily. I believe the issues at the source of this problem are that previously, having mobs with AI inside jigsaw blocks wouldn't have been possible, and the mobs would have needed to be contained by barrier blocks while their structures are being saved. This would have allowed some mobs to move towards the edge of their 1x2x1 barrier enclosure, which causes slight overlap between their hitboxes and the adjacent blocks.
Now, however, someone can run /tick freeze and then recreate these jigsaws pieces containing entities. You can summon mobs with AI sitting at the same height as the jigsaw block, since they won't be forced out while ticks are frozen. Likewise, mobs can't move to the edge of their barrier enclosures while ticks are frozen (barriers wouldn't even be needed), thus preventing any overlap with adjacent blocks. If entities are summoned at the bottom of the jigsaw block and at the block's horizontal center, and then those jigsaw pieces are saved to replace the old ones, this should fix both villagers getting stuck in the ceiling and villagers getting stuck in walls. I believe this would also fix issues with village-generated zombie villagers, pigs, cows, and sheep. It might not fix issues with any village-generated iron golems, horses, or camels, as those entities all have hitboxes that pass the bounds of a 1x2x1 volume.
I have tested a tiny bit in creative: structure blocks can still be saved and loaded while ticks are frozen, and after unfreezing ticks these mobs loaded from structure blocks have AI and act normally. (I have not confirmed that my proposed fix would actually fix the issue, but if I should do that I can try.)
COMETC2021A1
In 1.20.5
Minecraft386882
Confirmed in 1.21.4
1.14
1.14.1
1.14.2
1.14.3
1.14.4 Confirmed