bug when shortcuts are registered before release (alt+shift)

Hi, I use endeavourOS with kde plasma and after I set second keyboard layout, all combinations starting with alt+shift stopped work, because alt+shift are registered immediately even before they are released. On X11 session the problem is gone. This is really annoying because I use a lot of alt+shift+anything combinations in Pycharm at least. Found a lot of people with the same bug, but not a single solution.

P.S. I have a ThinkPad P14s gen5 and also tried an external keyboard (B820R)