I'm about to yank out each of my gray hairs. I've had an LG G2 (D801) with T-mobile since Feb 2014 and am on KitKat 4.4.2.
I have my screen display time-out set to 15 seconds. For the past 6-8 weeks, that screen time out is NOT working and my screen stays on almost all of the time. Rebooting...