Sorry to hear you are having issues. Can't recreate the issue on my HDR 4K monitor. Need to know more information on your system
1) Windows version, please use Winver.exe for full Windows version.
2) Fences and Deskscapes versions.
3) Information you monitor setup such as resolutions, scaling, connection type and anything relevant.
4) A screenshot or video of the issue you're seeing.
Here what I am seeing.
Stardock Community Assistant.