For some reason the pause function is moved to the ESC key. but ESC you always press when you want to reset camera as example. or get out of a bad camera position. unselect something etc.
But you not expect a pause screen.
At the other side, escapde from HMD device… in cae your forced to use it.
SHame that apple not have a PAUSE key, because that is the real key you would use on pc for the pause function.