mac issue (keyboard)

I'm using mac m1 with normal PC keyboard(ASUS).
And I found 2 questions.

1.If I switched(cmd+ tab) the window from game(full screen) to others, and then back to the game, the cmd key will being pressed forever, until I press command key.
This is very annoyed.
For example, I was watching talent tree before switch window, then I back to game and click. The talent that I clicked will lock, no preview, and did not ask me to confirm.

2.Some buttons at the right side are cannot be work. shift/ctrl/command/alt