This issue has plagued me for quite a while. To keep it short, when watching YouTube video, it will have a chance to not respond any input, even home button input. Only power button and volume button works. The video will continue to play as usual though. When trying to watch video in full screen, there is a very high chance that app is frozen, cannot unpause video, cannot quit full screen mode, after quitting full screen mode, the interface goes haywire. Sometimes the full screen mode will be activated in portrait mode, and cannot get out without force quitting the app. Is there anyone encountering such issue?