Thumbnails don't match the background when I try to change the desktop background
When I try to choose a photo from my Photos to put as my desktop background, the thumbnails I select are never the photo that shows up as the background. For example, if I have photos of a horse, a dog, and a cat, and I select the thumbnail image of the cat, the horse will show up as the background. I have tried to close and restart, as well as restart my computer. Any suggestions would be helpful. It's frustrating because I have thousands of photos, and I now just have a plain yellow background because I couldn't find any of the photos I was actually looking for.
Side note, when I attempt to choose from an "album", the contents of the album are also wrong.
MacBook Air 13″, macOS 12.1