The bug
When an animal walks in water which is only a half block deep, they can't seem to move and spin in place.
This bug also happen to some hostile mobs that can float on the water, like creepers, spiders, silverfishes, illagers
How to reproduce
Spawn some pigs, using wooden half blocks, with the top half filled with water. The pigs move into the water, get "stuck" and instead of moving, will just spin in place. They can sometimes move a very small big/slowly, but mostly just spin in place.
Related issues
is duplicated by
MC-137361
Passive mob spin/get stuck in seagrass
MC-139213
Illager in the pillage group spins around when in tall seagrass
MC-139281
Pillagers and vindicators can't find their way out of top of kelp blocks or surface sea grass
MC-139308
Pillagers become stuck on sea grass.
MC-144181
Seagrass makes creeper spin
MC-148135
foxes get caught in sea kelp trying to catch fish.
MC-148460
Villager stuck spinning on kelp plant
MC-148508
mob spinning on top sea grass
MC-148640
Mobs spin on themselves endlessly when they are on sea grass
MC-148756
Villagers cannot get out of water
MC-148774
Villagers spin on seagrass
MC-148793
Villagers getting stuck in water
MC-148849
Mobs
MC-148854
Zombies can't walk in slabs on the water
MC-148989
Villagers stuck on seagrass
MC-149192
mobs spin on top of sea grass and kelp
MC-149254
Sheep spin around aimlessly when swimming in sea grass
MC-149286
Villagers Stuck in Water
MC-149528
Villagers get stuck on surface-level water plants
MC-149596
Vilagers Lake Bug
MC-149770
Villagers Spin occasionally in water
MC-149985
Entities spin uncontrollably in water
MC-150050
Mobs like Villagers or Pillagers are getting stuck
MC-150423
Mobs get stuck and spin in a circle when trying to cross kelp
MC-150456
Villagers spinning around while in water
MC-150485
Mobs bug underwater on the block's like slab or kelp.
MC-150496
Mobs spin when swimming on underwater plants
MC-150606
Villager will spin in place when he swim in 1 block depth of water where kelp grows.
MC-150844
Seagrass bugging villagers A.I - blocks their movement
MC-150874
Pillagers get stuck on the seagrass in the water
MC-150882
Pillager patrol water AI
MC-150885
Мобы застревают в водорослях!
MC-150982
Sometimes mobs stand in a water depth of 1 block and have seagrass, they will dance Waltz.
MC-151505
Foxes spin when swimming above a sea grass
MC-151700
Mob pathing Sea Grass
MC-151733
Villagers spinning on waterlogged blocks
MC-151777
Mobs floating in water can't pathfind and get stuck/spin when intersecting with plant life
MC-151862
mobs spinning around on underwater blocks
MC-152073
Villager glitch
MC-152109
Bug with foxes
MC-152166
Mobs get stuck in water block that have seagrass or kelp
MC-152442
llamas spin on water plants
MC-152496
Villager stuck spinning in water.
MC-152572
Villagers get trapped in seaweed
MC-152779
A villager is spinning in the water, if under it algae or kelp
MC-153423
chickens stuck when lead through water
MC-153705
Villagers are so stupid
MC-153908
Villagers stuck in Water
MC-153982
Animals spin in kelp/seagrass
MC-154391
Villlagers just spin while in water
MC-154957
Villagers stuck in water
MC-155755
Villagers get stuck in sea plants
MC-155834
Just found a little strange thing.
MC-155913
Enderman blocked by dark oak slabs
MC-156594
NPC Villagers,traders keep rotating in the water,if its close to them!
MC-157090
Pillagers spin in circles and don't move at the edge of a village
relates to
Attachments
Comments
migrated
migrated
Confirmed for 1.13.2-pre1.
migrated
still in 18w 43c
migrated
Still in 18w46a - I have two Illagers in some water nearby who have been spinning on seagrass for many in-game days now. Normal game, no mods, cheats enabled but no cheats in use. I'd feel sorry for them if they weren't so shooty...
migrated
I confirm this bug too in 1.13.2, It's not just animals but mobs too. Any walking entity. The problem only happens when the entity starts its path on a water-logged block (seagrass, kelp near the surface, etc....)
migrated
It also happened to some hostile mobs like silverfish, endermite and vindicator in 18w50a, seagrass and coral can also stuck these mobs
migrated
Still in 19w02a
migrated
Confirmed for 19w06a
migrated
Confirmed for 19w08a
migrated
Confirmed for 19w11b
Asteraoth
@unknown, you are now the reporter of this issue.
CRAFTER_ROBO2002
Confirmed for 1.14pre2
ZeNico13
Still in 1.14 pre-5
ZeNico13
Still in 1.14 Release
migrated
Happens in 1.14.1, the issue also happens when a floating mob swims into a water block that also contains seaweed or some other kind of waterlogged grass. The mob should swim right through it, but instead it gets stuck and spins randomly.
ZeNico13
Still in 1.14.2 Pre-Release 2
migrated
Confirmed for 1.14.2 release. Cow following player carrying wheat gets stuck on seagrass and starts spinning.
migrated
this happens with every mob (animals, villagers, EVERYTHING). it really needs to be fixed
migrated
I've found that this bug also occurs when mobs try to walk on halfslabs that directly at water level (the lower 'half' of the block is filled with water while the top is slab). Really sucks for my slab-based raft village. I'm not sure if it's related, but creepers that blow up on these blocks also don't destroy any blocks, as if they were in the water (but they are not).
migrated
Still in 1.14 - 1.14.3 Prerelease 3
[media][media][media][media][media][media][media][media][media]
migrated
Bug seems mostly fixed. However, in 1.14.4 pre release 2, mobs still experience the spinning if they walk on the top half of a waterlogged slab (top of block is slab, bottom is water).
[media]
FaRo1
Since both the behaviour and the code changed, I recommend creating a new ticket and linking it here (so that it gets marked as related).
migrated
Made a separate ticket for the bug pertaining to the top halves of slabs (thanks Fabian) : https://bugs.mojang.com/browse/MC-156022