[ARCHIVED] Sims wear default underwear when naked

I came here yesterday as a silent reader because I have the same issue as all the others. But since then I noticed something else I'd like to share with you all.

So I'm having the issue with the families in my current save file, so far so good. Today I wanted to save some of said families to the Gallery, went into select a world and the household management window and opened them from there in CAS to save them. Upon saving them all of them are flagged as being created with CC in the gallery, even though none of them actually are wearing any. And all of them have the showering in default CAS clothes problem in game. It doesn't need to be related but I thought I'd share this with you since I remembered you guys suggesting it was CC and this looks as if there is some hidden CC or whatever on them. I tried creating new sims from scratch from the main menu of the game. They are flagged without CC. I put all my CC on them, removed it and then saved, still flagged as normal. (I'm not sure wether the game would save it like this though, maybe it was stupid to try...)

I have mods and CC in my game, which I updated before starting the game after the update/patch. Nothing of the CC seems to be broken. I didn't change anything in my game, just put all mods out, updated, started game without mods, quit game, put mods back in, updated mods, started game, which is my usual procedure. I never had this bug ever, I didn't download any new CC recently and before the update everything was fine - with CAS saving to Gallery as well as showering.

Hope this might help figuring out what causes the problem.