It is proboly a bug that was introduced into the december update. becasue a lot of us had issues on starting the december updates, I would guess that it may be simmilar to the source that messsed up your chores.
Hopefully it works tomorrow.

As for the caracters changing rooms, that is not a bug, but normal.

Monty :-/

I know. I'm just saying about Wilt's elf costume.