Well, don't play on Linux
Trust me, it's full of bugs and a little bit limited. Don't get me wrong, I love this game and it's very cool that we can actually play this on Linux. But at the end of the day the gaming experience is not great on Linux.
WITH THIS METHOD YOU WON'T LOSE YOUR PROGRESSION. This is really important cause this game is fun but takes a lot of time, especially if you want to reach the highest levels. I mean you have to spend a ridiculous amount of time to get all the quests and stuffs no matter what you do and even with some skills and speed run.