Heya Klairm, sorry to hear you're having that issue. Not too sure why it's occurring off the top of my head and I'm not a Linux user myself. However, if you're able to locate the log file then that might have some clues. You can find it here:
~/.config/unity3d/Matt Glanville/Switch 'N' Shoot/Player.log
Please send it to [REDACTED] and I'll see if I can help.