I don't think there's a way to disable this for now, but I've noticed it only goes in PiP if you go back to the home page while you were watching a video that is in an automated playlist (haven't tried with a custom playlist of my own), if that somehow helps

\+1 to this It is so annoying, all it's done is add an extra click to my life, it's like Skype now, you click out of a video but it goes "REEEEE IM STILL HERE YOU DIDN'T CLOSE ME YOU DUMMY AHAHAHA"

Anyone found out how ? 

&amp;#x200B;

Incredibly annoying feature for desktop honestly...

Disabling Picture in Picture on Desktop