Villager don't recognize blocked doors correctly

Like you see on the screenshot, the villagers don't recognize "invalid" houses with blocked doors:

• Adult villager:
  They should ignore these invalid houses
  Currently they seem to run to the North(-Z)-West(-X) corner of the house
• Baby villager:
  Some of them get by accident inside, but they don't really understand how to get in, even it is possible for them