Video stops playing when switching desktops

[bschlenk]

This is happening for twitch specifically, haven't tested anything else.

Repro:

• Open multilple desktops
• Open safari on one of the desktops
• Go to twitch and start watching a stream.
• Click the PIPifier button
  • Should now have video playing in PIP mode
• Switch to other desktop
• Video stops playing
• Clicking play doesn't start it

[BradPatras]

Seeing this with twitch as well, but even using the javascript command directly javascript:document.querySelector("video").webkitSetPresentationMode("picture-in-picture"); in a bookmarklet also has this same issue so it might be a problem with safari or the OS itself