Villagers won't go in home when its nighttime out

I was strolling around my self made village, when I noticed that at least two of my villagers were just standing outside their homes, just staring at the wall as Zombies attacked them. Luckily, I was able to save them both, but this bug is a major annoyance, as I'd hate to see another T-Virus outbreak. Joke aside, I'd love to see the bug squashed before the next update hits.