I have a Studio M1-Max and I am unable to change the wallpaper to a picture of my choice. I can take a JPG that is on my desktop and I can right click and it gives me the choice to make as desktop picture but after clicking on it, it doesn't ever change. When I go to the wallpapers line in settings I can only choose the wallpapers that come with macOS Tahoe. Am I missing something really simple?