Good ideas to investigate. Thanks for the suggestions. :)

At time of disappear, the keyboard was turned off (Bluetooth, I was watching videos) Only mouse was in use, and the focus was on a non streaming browser. (Disappeared streaming browser was on monitor two, steam and other items that disappeared were on primary monitor) I’ve since wondered if I somehow hit just the right combo of buttons on the mouse to cause it, but no luck reproducing.

I don’t have restore previous sessions turned on. The haunted browser came back after a full day of normal use and two reboots. Having it reappear at the point in the video I’d been watching (and have since finished) really made me double take.

I use display port for both monitors, and have since installing this OS. Cables have not been reseated since then. I did have trouble getting both working correctly, (Nvidia card) so will double check that I don’t have a ghostly monitor installed to the system.

Mint (Cinnamon) - Mutter (Muffin)

Haven’t gotten too far into customizing/switching things up yet, still learning.

See through items would be almost as amusing as vanishing items. :D

Literally. :D

The missing programs were not on the taskbar, they just poofed away all at once as if they’d been closed. (Nothing on taskbar for other workspaces) Certainly didn’t expect one to reappear a few days later. >.<

If it’s some esoteric geometry bug, it’s a darn tricky one.

It’s a self build. ;)

Most likely explanation.

I’m OK with this.

I’d wager it’s due to the user’s catalogue of knowledge being effectively reset, even the deepest of users of windows has years of working around the (many) issues. Swap to a new OS, the knowledge doesn’t always transfer.

It’s not hard, it’s just different.

Used to buy succulent seeds online, and sadly there were a fair number of scammers selling seeds for what appeared to be gorgeous, but non-existent photoshopped succulents.

Scammers gotta scam, and AI makes it easy.