When the collision box of a player or a mob is interacting with the one of a sleeping villager, the sleeping villager will be accelerated and be moved to other places...(to the sky):[[

Features of this bug:]

1. Villagers can be shifted while sleeping.
2. Villagers still can be hurted by players after they are shifted.
3. If u knock the bell in the village, the shifted villagers will be immediately teleported to the bed they are supposed to me
4. If u destroy the bed of a shifted villager, the shifted villagers will be immediately teleported to the bed they are supposed to me

Those screenshots are from my realm server. I am very sure this bug only appears after the recent 1.16.100 update. In months ago, I never met such a kind of issues in my house until the 1.16.100: I saw my villagers were scattering in every corners of my house, and some of them were trying to fly to the moon..xd