Sim will not complete their test (NOT A BUG REPORT)

Sims getting up and leaving in the middle of the exam has not been fixed, no. Littlemssam has made a mod which sort of fixes it if you don't mind using mods.

I would say the state of the game makes it not safe to update yet, but that's something that every user have to decide for themselves. I think they went too far with the wants & fears update (they were repetitive and we couldn't even turn them off because of a bug) so I haven't updated since that.

I'm hoping things will be better this year.