Mob AI seems to freeze in entire chunks following extreme lag – mobs outside the affected chunk move and act perfectly normally at the same time but as soon as they step into it they stop moving and are unable to be pushed. Seems to happen most frequently when traveling and loading new chunks, and can last for 1 to 8 minutes as far as I've seen.
Related issues
is duplicated by
MC-148743
All Mobs Freeze
MC-152281
Entities Frozen in Chunks
MC-152527
Items and mobs lags in certain chunks
MC-152873
Mobs freezes and items rubberband
MC-153224
Mobs Are ( Still ) Not Moving
MC-153393
Mobs/items freezing
MC-153618
entities don't move when in a chunk that was loaded after them
MC-154526
Non-player entities in the Nether might freeze upon being in certain chunks.
MC-197024
AI of all mobs not working an certain chunks
relates to
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migrated
migrated
Saw something that could be another instance of this bug when leaving a Pillager tower on a server with a high spawn rate, where 5 pillagers spawned behind me but... didn't react aside from turning towards me, so it was clear they were targeting me, but couldn't act in response. No firing of crossbows or movement.
violine1101
MC-153618 is a duplicate of this issue which seems to be very detailed and contains some steps to reproduce.
CubeTheThird
Does this issue occur in the latest pre-release? (currently 1.14.4 pre 7).
migrated
Still occurring in 1.14.4
wobst.michael
Does this still apply to 1.15.2?
migrated
Confirmed 21w07a, happened to a chunk not far from my home following a large amount of server tick lag.
ampolive
Can confirm in 1.18 Pre-release 1. I experienced a pillager that stayed perfectly in place for nearly two minutes, and I made sure that I was not on spectator mode.
koponen942
Can confirm in 1.18.1. Experienced this on our server, all ENTITIES including items etc. entering/spawned in the chunk froze completely. They couldn't be moved, damaged or interacted with at all. Restarting the server fixed the issue.
Attached an image where there's a dead chicken entity that's not despawning.
Panda4994
Is this still an issue?