New bizarre bug: when I switched to the Crumplebottom household and found Agnes, she had become some sort of two-faced monstrosity...
After allowing the game to run for a second or so, she changed back to normal. I suppose that makes this more amusing than distressing.
EDIT: And then, to make things more disturbing, I got this:
It seems that all the schoolkids, instead of going home like they should, stood in the exact same place outside the school and merged with each other. Every time a new kid would come out, he would walk straight into the pile and mush with them. I'm in control of the top two on the pile, but they won't obey instructions to "go here" or "go home".