I recently purchased a Lenovo Tab M10 tablet (TB-X605F), which is mostly working great.
The problem is I can't select any wallpaper.
When I go to Settings - Display - Advanced - Wallpaper, there's a choice of Photos or Wallpapers. The Photos option works fine, but when I select Wallpapers it briefly flashes up the wallpaper thumbnails, then goes back to the Photos | Wallpapers choice.
The same happens if I long-press on the desktop and choose Wallpaper there.
I have tried in safe mode, and the same thing happens.