Bandit got stuck in the decoration during his run.
Beatrice got stuck on her way home and just kept running the whole night, trying to hide inside. Poor thing!
It looks like even though the obstacles are working as blockers, they are somehow not detected by the running pigs. I'm not sure though what stopped Beatrice from getting inside the house.
1. Play the game 2. Observe the pigs that are running towards an obstacle 3. Pigs will get blocked by an obstacle but they'll keep running