YT non-premium here, it’s been working alright for me and even recovered from opening another video link over top of the PiP video. It paused and restarted after closing the competing video without issue. In my experience it’s just a buggy feature sometimes regardless of OS version.

I definitely agree about the device switching improvements, it’s been working surprisingly well for me. Though I do wish they’d add a button on the device that steals the connection to return it to the other device, rather than just seeing that option on the device whose connection was taken.

Edit: it would appear I’ve caught a case of the dumb, that button totally exists

Good looking out, I’ll add it to the list!