Famous family members bugs/incest

I created a family in CAS with two sisters and split them into different households. One of them gained a few fame points. When the non-famous sister invited her over, she had to "Attempt introduction" (this makes no sense, they're SISTERS) and after a successful attempt, I have a prompt for my sim to "Imply attraction" to her famous sister. All other interactions available are fan-to-famous interactions, there are no standard ways to interact the way sims normally can with family members.

The two are still sisters in the family tree and the relationship panel. It's extremely nonsensical they can't interact normally because one of them had a career opportunity that gained her some fame, and the incest prompts are just disgusting.