Like title says, I did resolve this, but not sure what went wrong in the first place.

This happened with Fences 4 on Windows 11.

I recently upgraded to 2 displays.  Despite using Fences, I still have some stuff loose on my desktop, and wanted to keep it that way.  However these icons were showing on 2nd display desktop.  I selected them all, then dragged them to main display desktop.  That is when they disappeared.  I tried many Google non-Fences fixes, which didn't work.

When I uninstalled Fences, the icons reappeared.  When I reinstalled Fences and it auto-applied my fences again, the icons disappeared.  I did check the fences, none of them had these items.  When I checked my desktop folder, it showed these items, and when I tried dragging them to my desktop, it said they already existed, so nothing changed.

My thinking is Fences somehow created a new fence when I transferred the items from the other display, but somehow made it an invisible fence? Or broke when making an unintended fence, so they were getting sorted under something I couldn't access. It definitely seems like they were for some reason being sorted under a fence I couldn't see.

Not sure how much more I can help, if it's a bug I can provide as much info as I can think of to try and fix. I took a quick look to see if there was something in the main Fences program that listed all fences on desktop, so that if this happens again I can see if there is indeed an extra fence I did not intend to create that I could delete to get the items back on the desktop as loose icons... but did not see this. If there is a way to do this, please advise.

Basically the fix for me was to delete Fences in registry to get back to defaults, I could see all files on desktop again, but then of course had to remake all fences I *did* want to get most files sorted under fences again, and this let me see the loose files I wanted on the main display's desktop again.