A new way to PIP
Just head over to
chrome://flags/#global-media-controls-picture-in-picture
flip the flag to ‘enabled’, click that blue restart button and the next time you pull up a video that supports PIP (YouTube is the obvious choice, but many services use it), you can now look in your notifications tray for a new PIP button.
Chromebooks only
sidenote: I'd keep the Google PIP extension installed also 😉 just in case
and for CoSo-Live streaming channels