Now, I have seen villagers unable to move, trade, or die. When I drop an item, it is removed from my inventory but no drop. It is as if that the entity part of the world cannot be changed. No odd behavior upon launching and blocks behave fine, but it is as if the entities are frozen. But I have attached the launcher log upon request.
Linked issues
is duplicated by 10
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Testing in three freshly made worlds with 19w13b I found that this only happened (at least in my cases) in villages in spawn chunks. When I teleported to villages I had found through /locate the villagers there behaved normally. The villagers in the spawn chunk villages can be pushed around but have no AI of their own and can't be interacted with in any other way. Putting work stations right next to them has no effect whatsoever either. Teleporting back to the spawn chunk villages after having been outside spawn chunks doesn't help. Closing the world and opening it again on the other hand does, then the spawn chunk villagers start to behave normally. I have not tested this on a server, only single player.