1. Windows 11 Pro 23H2 (OS Build 22631.4602) running on an I9-14900KF.
2. Fences Version 5.84
3. I am referring to desktop icons that are "Fenced". I don't use rolled-up fences, portals, etc. The icons are shortcuts to programs/applications or shortcuts to folders or possibly (briefly) files tied to applications i.e. text files associated with the kate editor, 7zip files, etc.
As a side note with additional data: I have a two monitor setup, both running 3840x2160 resolution at 100%. My fences are only defined to the primary monitor. Something that may be related is that the issue appears to consistently occur when I launch an older application that reduces my resolution during execution but restores the resolution upon completion.
However, after applying the registry update you provided, restarting File Explorer and locking Fences, I launched one of the applications that invariably required me to restore the Fences and the issue is still occurring, but doesn't seem as bad i.e. some icons were moved, but the upper left icon tied to the fence appeared to consistently remain in place after the lock. Prior to the ability to lock, the icons would be arranged in some random order.