Me and a friend have restarted fresh realms several times since update 0.16.0 as well 0.16.1. The villagers and villages are no longer behaving in a natural way and it is really taking away from the enjoyment of the game.
We are treating naturally spawned villages with kiddie gloves so as to allow them to work how they are supposed to, but villagers behave erratically and the village becomes dysfunctional. Here is a list:
all villagers crowd a single house
villagers wander away
villagers are frequently seen walking/running inside solid blocks
1 villager will just stand on the roof of the small square house with ladder/fenced rooftop.
Because of the crowding issue, one zombie usually causes a full outbreak and the village is lost.
I've tried breaking the door and then they all just move to one other house and continue the same behavior. Something very strange was introduced with 0.16.0. Villagers were never broken.
This issue is Invalid. Please keep the number of bugs per report limited to one, so it is easier for us to resolve each issue.