Starts the launcher natively and via Proton, but starting the game only shows a black screen with background music in fullscreen as well as windowed. Focusing the game will freeze Gnome.

There is a known issue that sets the screen reolution to 0x0 in the settings.txt and preferences.txt under

SteamLibrary/steamapps/compatdata/233450/pfx/drive_c/users/steamuser/AppData/Local/Introversion/Prison Architect/

but that doesnt fix the problem. Couldn't find the config files for the Linux port