iPhone x does not lock
I press the lock button and the screen goes blank, or it will auto lock after 30 seconds. When I wake the phone the padlock icon is always unlocked. I thought that it was a problem with face id as I didn't matter who looked at the phone it unlocked. So i turned off face id.
The phone just does doesn't lock even though the screen is blank, raising it the display opens to the unlocked padlock icon.
iPhone X, iOS 11.2.6