Thx for the tip, i found out that you actually can use any random key which is not used for Worms so you dont have to re-aim while ur shooting

. Just gotta get used to doing that now... i still hope that bug will be fixed since its only a small one.
I guess this is the error causing it:
fixme:keyboard:X11DRV_ActivateKeyboardLayout 0x4090409, 0000: stub!
I have loads of those in the console when playing...