villagers in the 1.9 snapshots don't want to go into houses at night and they all huddle up in one corner.

Whenever it's night and I'm in my village the villagers don't seem to want to go inside the houses. They all huddle up in one corner outside of a house. At first I thought it was that they couldn't climb stairs but that's not the case. This has happened on the 1.9 prerelease