Horrible video app.

No system wide picture-in-picture, the YouTube app only version of PiP is simply laughable, small and uncontrollable, the app stops playing when in background, old-fashioned design, doesn’t play in 4K. And YouTube killed the app that did all of that (ProTube). Seriously, either make a decent app or let third parties do their thing.

LucasRHil about YouTube - Watch, Upload and Share Videos, v13.02.9