Hello,
Yes the same issue, only I am a PS4 player. As far as your suggestions, #1 I perform regular cache clearing of my PS4 weekly and sometimes even more often if situations like this occur (therefore I have tried this already) #2 I performed one time in the past and I lost ALOT of library build saves due to it nor did it fix the problem I was having at the time. So I am not sure I am willing to give that a shot at the moment.
Since my original post, I have taken a bunch of photos to test it. So far these photos are ok,.... so far. But more and more of my preexisting photos are turning black all throughout several different saves/games.
In addition to this, after the recent patch, now I have households with pets that are showing up solid black. 😠😠😠 (Pictures of this situation attached. The example is of a custom painted Siamese cat that should have black going up to the chest and belly on all 4 paws/legs. In every mode he shows up solid black. In paint mode he shows up as a basic game default paint.) Some of the pets that are showing up solid black are custom painted, some are not, so it has nothing to do with that.
I'm not a happy sim'er right now. Additionally, I have only been playing since mid-May 2019, so a little more then 3 months and I only played base pack for the first month or little more. I didn't buy the other packs until roughly the end of June 2019. So these photos that are going black are not any older then middle of May 2019. The pets are not any older then the end of June as that is when I purchased the pack. All items and pet sims have gone through several cache clearings as well have gone through a complete reinstall of the game.
Basically what I am saying is I am more "reporting" the issue. I am 99.9% sure it is NOT on my end. There is a bug that needs fixing.