I can't get villagers to go to their beds at night

What I expected to happen was:
I expected the villager to go to it bed when it got to night

What actually happened was:
It got stuck on a wall because it couldn't properly pathfind to it's bed

Steps to Reproduce:

1. Make a custom villager house
2. Put a bed in it
3. Link a villager to that bed
4. Wait until night
5. The villager should get stuck on a wall and be unable to properly pathfind