I can't help much with console stuffs, but I did find this thread with info on Answers HQ if you haven't already found it. FAQ - Sims 4 Console Gallery - Answer HQ
I’m only associating it with the update cause mine just updated and it’s happened after an update before this. I was trying to save a house I just built and it said there was an error so I saved my game and restarted my PS4, I logged back into sims4 went to my gallery to see if maybe it still saved by chance just to see I have nothing but new maxis builds in my gallery with base game characters.
I can't help much with console stuffs, but I did find this thread with info on Answers HQ if you haven't already found it. FAQ - Sims 4 Console Gallery - Answer HQ
Thank you so much! It’s honestly a hassle trying to look for solutions cause there’s so many threads to read from😭 but this one fixed it for me🫶🏽
