Villagers are not correctly entering their beds (laying 90 degrees incorrectly) and will float off if nudged. Villagers may also disappear, which requires a relaunch of the game to see them. Traded villagers are also linking to other workstations, losing their previous trades. There are also many issues with villagers' pathfinding to their workstations. 

A separate note = issues with other entities:

I am also experiencing an issue with entities being trapped in a one-block area. They will fall into it, and shoot out from the diagonal sides, while the hitbox is still in the pit.