The game seemed locked to running in a 1024x768 window. Changing the screen resolution in the game's own launcher did not change anything. Tinkering with protontricks to use a virtual desktop or changing windows version to XP caused the game to stop launching entirely, and simply reverting the changes made did not fix the failure to launch. I had to delete the compatdata pfx/ folder to restore the out-of-the-box install that actually manages to launch the game.