[felixfoertsch]

I was missing that one too and did some research about it a while ago. You can achieve the system-wide PiP mode in Safari with a bookmarklet. I posted the guide here: https://felixfoertsch.github.io/tip/2019/02/15/use-pip-via-b...

[aprvchndrs]

PiP worked in Safari with an extension[0] right? That's why I was still using it for YouTube streaming in the background.

I've switched to Firefox on almost every other platform (apart from iOS). with Firefox 72, I've switch to Firefox only on MacOS as well.

[0]:https://apps.apple.com/us/app/pipifier-pip-for-nearly-every-...