Villagers try to pathfind through walls to get to a bed or work station. 
Meaning they would get stuck on a tiny hill and try to pathfind through walls and pace back and forth the whole minecraft night. I've had to set the difficulty to peaceful several times because they would not go to there houses. Even know 10 blocks away is a path down a hill to the house.
Its gotten vary irritating to deal with.
And they would wander too far away from a village.
And another issue: I've took villagers from one island to another and there job profession did not change. as the villager would pace back and forth where the old island was. 500 blocks away mind you. They also took ride by boat. they also tried to pathfind to a bed that did not exsist anymore on that island.

Cannot give videos sadly.