Hi! I'm running iOS 8.0.2 on my iPhone 6 Plus. I've turned "app updating in background" off in Settings, but I was listening to Youtube last night and fell asleep. When I woke up it had drained about 15% of my battery. I checked the batteri usage stats and it said "60% Youtube - background activity". Is this a bug? I have turned everything off but it still uses the app in the background.