I just noticed that although my current character completed a class in cosmetic surgery some time ago–and it says that, on the list of courses available–she can indeed sign up for it, again. When she does, class days appear in the weekly schedule up top, as though she’d never taken CS, before.

Note, this is with a game I’ve been playing since at least 1.05.

hmmm. could you email me the save game. I presumed I’d made a typo, but it looks ok.

On its way.

Aha, it doesn’t prevent you doing this with any class it seems. The listing tells you it’s complete, but the window at the bottom still enables the enroll button.
Its just a cosmetic bug that I’ll fix with the next release. Cheers.