Some keyboard inputs don't work (AZERTY / QWERTY)

[the-saddest-clown]

• Linux Mint 20.3 x86_64
• using PanzerCashm v0.3 with CSM.BIN from English version
• tried with my local keyboard layout (FR = AZERTY) and US = QWERTY
• unable to open console by typing "backspace" (tried all others keys without any result)
• unable to switch back to double barrelled shotgun (when typing "2" key, all others weapon keys seems to work).

[Panzerschrek]

It seems like an error (or misuse) of SDL2 library. I have completely broken keyboard input on my system (Ubuntu 18.04) if i run PanzerChasm while Russian keyboard layout is active. And this behavior is the some for some other games that use SDL2 library.