Kiosk mode broken on macOS and El Caiptan


I am testing kiosk mode on El Capitan and macOS using latest electron version and it seems to be broken. I am able to get out of kiosk mode by using following keystroke combinations

Option+screen brightness down(F1)
Option+screen brightness Up(F2)
Option+misson launch(F3)

and probably more which I am not aware of.

Any idea why we are able to come out kiosk mode using above keystroke combinations


it seems like it is open electron issue since Jan 2017. it is documented here.