Ideas
Title is actually the same as it was at AHQ.
The info in the old thread is not lost. It's all still there in the bug archive and the thread has been linked in the first post.
I know, but that one was incorrect too. As highlighted in my screenshots, it's not just Male sims with Feminine Frames. The broken Deformer Maps are actually affecting all sims with all Gender and Physical Frame combinations, but under different circumstances.
If you're wearing clothing that matches your Physical Frame, you will never see it, which is the only reason there isn't a flood of Bug Reports about this. Cisframe simmers will only encounter this if they happen to wear or randomize with one of the improperly flagged CAS items that was made for one Frame but flagged for the other. Transframe simmers will encounter it more often, and always when "nude" or in "default underwear" because our "default" top and bottom body parts are flagged for Restrict Opposite Gender, and a high percentage of CAS items are improperly flagged as Restrict Opposite Gender, which means we see it more often because those improperly flagged "ROGender" CAS items don't match our Physical Frames.
I've been cleaning up and overhauling EAxis' CAS item PartFlags for literal years - ever since EAxis accidentally ROGender'ed the pride fingernails, then took months to fix it - I'm not just pulling this out of thin air.