I have a major problem with the plugin, since I updated from Kido Leia to Matrix (19.1) and Debian oldstable to stable (i.e. bullseye):
I start Steam from Kodi with the Steam plugin. Then I start my Game (Divinity Original Sin 2). It starts fine, but after a few seconds (25% of the initial progress bar), there is an error message box from Proton/Wine saying that there was an error creating a file or directory in the savegame folder. Of course, you cannot copy/paste from that messagebox, why would you want to do that?!?. I didn't find the message in any logfile... It sounds somehow like a permission problem for the user, but I can hardly imagine that he user is changed...
It gets really strange, when I instead close Kodi, open a shell (as the kodi user) and start steam via the steam plugin manually: then everything runs fine...
Sorry that I'm a bit vague, but I currently don't have access to my kodi installation. I'll happily answer questions more in detail later. If you need more information: I' an experienced Linux user and Python developer (just have no experience with Kodi), so I should be able to patch the hell out of the steam plugin, if you give me some instructions
Thanks for reading,
The Grue