Every time I’m in Desktop Mode this pops up. It seems to be spawned by Steam Proton, though I’m not sure why since it happens even before I launch a game or software. Can’t figure out what exact process is running it. Hitting install either fails checksum, or nothing happens after it finishes the download, and then it just pops up again. Any ideas?
Open system monitor and inspect processes tobsee where doest it come from. You can also open terminal and type
ps -aux | grep -i wine
That should yeild some more info including full command line of Wine’s processes.
The pop up however runs always if Wine prefix doesn’t have Mono implementation installed. It can be Steam trying to perform some task while updating a game, but without additional info it’s hard to tell