Yeah, I hope no one else has to suffer it.
Me neighter.
Well, what you could do to be completely sure does revolve a little more time than just reinstalling so you can see for yourself if you are willing to do that (you don't have to).
What you could do is reinstalling and than putting back your savefiles to see if that will have fixed the problem. And if it doesn't you have to reinstall again and this time start with a new family to do it again.
I know you will need much more time this way, but you will help out a lot of us. This is the only way I can see for you to make sure it was either just your savefile being glitched, or a really nasty bug that came with generations.
I will test this skill too later on, but that will take a while.