Married sims suddenly siblings

I have started my legacy save making my dream family and inserting sims that resemble me and my partners. Well when I last logged on me and my spouse sim with children are now brothers and his skillful sleep projection is now also in the family tree?? I found out when I could no longer tell my stepdaughter that I was proud of her. The family has 2 kids and 1 on the way. All of the sims are male and two of them are trans. This is unacceptable especially because EA has posted about eyelid fixes but they can’t fix this save file ruiner. Im dropping the game until this is fixed which is ridiculous because i have thousands of hours and have spend hundreds of dollars on this game. No fixes are permanent as it will just reoccur.