@youtube app doesn’t AirPlay correctly to audio-only output - doesn’t show display in iOS device. App also gets confused and keeps the airplay overlay when switching back. Also, how about enabling PIP on iPad?! Running iOS 12.0.1 and AirPlay 2.
Get the same behavior after reinstall - see attached screenshot. It’s specifically with audio-only AirPlay devices where the overlay remains. The video is actually playing in the background!pic.twitter.com/QTFq7t1qom