So i recently had thos bug on my iphone 4s and now on my iphone 6 plus. The bug is that if i get a notification on the lock screen, the lockscreen wont turn off until I remove the notification or lock the screen manually. I think I get this bug while im listening to the music background. This bug is so annoying and it drains the battery if you dont notice the notification right away. So please tell me if some of you know anything about this bug and how you can fix this.