Last month, probably in Firefox 66, a new feature showed up - picture in picture video. Now when I exit a YouTube tab playing a video and go somewhere else on the website, the previous video hangs in the lower right corner of the screen, and if I hadn't paused the video, it plays.
This is obnoxious and I'd like to disable the feature. I've looked online, but the flag from
about:config that was used to enable PIP in beta,
media.videocontrols.picture-in-picture.enabled doesn't seem to exist anymore.
Are there any ways to disable it? Given the fact it's now a WebAPI draft, more websites could implement it, so solutions that aren't YT specific are preferable.