There is no setting to lock the cursor to the game window

I have clicked off screen multiple times essentially tabbing out of the game mid combat. I went and looked for a setting to lock the cursor to the game window and do not see one.

Yes. I have 2 monitors and died a couple times because of it

Have the same problem. And the fix is quite easy:

Cursor.lockState = CursorLockMode.Confined;

But noone cares