MacOS Tahoe Wallpaper Program not working properly

Screenshot of mystery location of wallpaper my photo retention.

On this Macbook Pro M1 Pro Tahoe 26.1
My question is why does this happen?

Bugged Method – Inside Photo App set Wallpaper

1.share

  1. set wallpaper from Photo that you selected

  2. Check Finder Saved to Desktop Photo Folder

  3. X button fails to delete wallpaper

  4. Saved to Desktop Photo Folder

  5. Manually use Finder to Delete old retained wallpaper

other method – MacOS settings set Wallpaper from Photos

  1. setting

  2. Wallpaper

  3. Your Photo

  4. Set Wallpaper

  5. Check Finder Wallpaper NOT saved Desktop Photo Folder

  6. X button does delete Old Wallpaper in Wallpaper Settings