That steps was suggested to ensure you have a good install, something might happen recently that causing it to happen more often. Once those steps is done, it might not resolved your issue, but at least now, we are sure the apps is on it best possible state, ie freshly installed. Once that is done, we can move on to see if there is other application interfering with Fences in causing the issue.
Also while you at it, please provide more information.
- Windows full version and OS Build number.
- Do you have Startdock Deskscape installed or any other wallpaper managers installed in your system?
Thank you,
Basj,
Stardock Community Assistant