UPDATE: So moving my constantly disgusted global superstar into a new house/neighborhood with her boyfriend did not fix the issue. She is constantly disgusted. In fact, she even woke up several times simply to express her disgust. It occasionally seems to cancel actions, but not always.
And I still cannot confirm if the "constantly disgusted" glitch is why she won't rehearse scenes with other celebrities. Even in the new house she won't complete those required rehearsals with anyone she's not in love with... Could it be because she has the noncommittal and hates children personality traits? So those traits are triggering her "no touching" celebrity quirk constantly and making her not want to rehearse scenes that involve touching with others she's not romantically involved with? FYI, she seems to be able to perform scenes with co-stars that she has a strong romantic relationship with...
On a side note, I encountered a weird "flirt problem with this particular sim. When she was first starting out as an actress, she was in conversation with a random sim when a "just starting out" celeb showed up. So I figured I'd have her flirt with the guy to further her career, so I tried a bunch of flirty interactions with this celeb. Well, they didn't seem to make a dent on him, but suddenly the chick I was conversing with first was developing a romantic relationship with my sim?!? So even though I did the flirty interactions on another NPC, they actually completed and registered with the other sim I was talking with. in fact, the conversation bubbles changed from his face to hers right before my eyes--even though I'd clicked on HIM to initiate the flirty interactions! What's that about?!?
