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I have an app which streams live video and me using AVPlayer for it.On my iPad, in settings->Display &Brightness -> Auto-lock set to “never”.Now I’m playing the video for 1 hr or more without any user interference( no user touching the iPad) and video is playing fine.The behaviour is - app is playing video and then suddenly the app goes into background mode even though no interrupt or no user interference. Also no crash or exception observed.Since I have registered for "UIApplicationDidEnterBackgroundNotification" and hence I came to know app goes into background mode. I'm not sure why or how the BackgroundNotification is getting triggered automatically even user does not press home-button at all nor any interrupt.Same app on iOS 12.2 or 12.3 running continuously for more than 15 hours or more.This is observed on iPad OS 13 Beta 3 only. Is this bug of beta or something else ?