My sim has a dark form, but never uses it when feeding or using his abilities. Is there a way to set it up so he'll automatically transform or do I have to do this manually each time? Update: so I ...
That's odd. Definitely some sort of bug. My vampires always automatically transformed when feeding, no matter where they were. It annoyed me though and I always delete the dark form now. lol. I don't really have a good suggestion, since I haven't seen it myself. But something that frequently seems to fix bugs affecting only one Sim, is to evict them and move them back in. I have no clue why, but it's worth a try.