

Out-of-Box English verion installed and worked well. Stability were better than with windows on same machine.
Alt-Tab may rarely lead into crash or hang
Scenario editor may lead into some crashes, but less so then with win10. I'd advise frequent saves.
MODS that worked: Textures: http://horus-top.blogspot.com/2013/05/htop-final-released.html Models: http://horus-top.blogspot.com/2021/06/first-models.html
Mod that did not: http://horus-top.blogspot.com/p/download.html (but I have not fiddled with it either)
Game (not proton or Linux) has some issues displaying some language specific special characters, like umlauts (õ; ä; ö; ü) by default, even if German version is installed. This is introduced by game engine peculiarity and is treatable by converting encoding of "languagetext.txt" file into Unicode (UTF-16)
. Other vice in-game strings may appear with gaps instead of unrecognized symbols. Same issue with language file encoding sometimes may cause game to crash immediately after start up - until encoding is fixed. This problem weren't present with original English language file and game worked as expected and everything were displayed well.
Runs as soon as you press play.

Stuck a screen saying "Please wait"