had this happen to me with EVE Online. What DE/WM are you using? If it’s a wayland one are you using xwayland-satellite?
This issue would only happen to me with WMs like Hyprland, Niri, Sway, etc. on KDE Plasma didn’t happen. the solution I found at least for Niri was ensuring xwayland-satellite was installed AND run the game in window mode.
they do. desperately. it’s been stated for awhile now.