This is not a new bug, maybe just discovered by more people since they try to recover photos from the Gallery/Library.
My game version is 1.120.117.1030 (two updates behind) and this happens to me too. I noticed it while I made a shared backup picture room for my several households. I made a room, moved photos from a household there, saved to Library, then changed to the next household, downloaded the room from the library and put photos from this household there and so on. All other pictures survived the upload and download except my University graduation photos & photobooth photos (I didn't have others mentioned by Crin). They turned black.
