It worked like that on N9 as well. I don't mind if the screen is always on when it's lying on the table next to me during nights, besides it's always on the charger anyway. If I want to conserve battery life with glance screen on, I can just turn the phone upside down and the screen will go off.

Since it works on non-OLED screens without the battery completely dying, it can work on Jolla too.