I believe Fences v4 not compatible with Windows 11. Please do 30 days free trial on Fences 6 and see if the issue appear. Do note that you probably need to rearrange everything again manually and take a new snapshot. Reboot and see if the saved layout work.
Also note that Fences has improved its layout engine since Fences 5, which work better on Windows 11 and multi-monitor system.
Thank you,
Basj,
Stardock Community Assistant