villagers wont navigate to beds and won't breed

What I expected to happen was...:
villagers should navigate to bed when its night

What actually happened was...:

when it's night ** they just stand still

Steps to Reproduce:

1. Put 2 villagers in a 9X9 farm
   2. make sure they have atleast 4 beds and enough food to breed
   3. wait for night
   world download: http://danielsimporium.nl/download/world.7z coords are 531 73 -408