Hello,
I haven't been able to reproduce this either. Not on the Windows 11 system itself, nor in Sandbox. Something could be fundamentally different about my display (1920 x 1200 is my maximum resolution, for example).
That being said, the closest I've been able to get to this happening on my end is by taking an automatic layout provided by Fences, moving it elsewhere, and then changing these outlined settings:
https://cdn.stardock.us/support/uploads/Fences_2024-04-30_16-05-34amcguinness.png
Interestingly, with "Don't preserve my desktop layout" checked, even in "restarting" with Windows Sandbox, it does produce a very similar looking problem of randomly scattered Fences.
So, my impression is that if anyone experiencing this is confirming they have it set to "Preserve my layout", and still the preserving of the layout is failing-- then we need to know (1) what is unique to your system that could be affecting your display, and (2) what you have changed since the problem started.
If the answers are unknown for whatever reason, please see if you can Windows Sandbox to recreate the problem in this environment. Windows 11 (won't work in 10) will allow you do this, and even record video capture of the problem through a simulated "reboot".
https://learn.microsoft.com/en-us/windows/security/application-security/application-isolation/windows-sandbox/windows-sandbox-overview
To treat this as a reproducible software issue, we would need such verifiable evidence to log the bug internally for our developers to look into.
Adam McGuinness
Stardock Customer Support Specialist