1678979 - Picture-in-picture broken when launched from web extension (side view)

Status: NEW

(Toolkit :: Picture-in-Picture, defect, P5)

Description

[Andreas Pehrson [:pehrsons]]

Attachment: screenshot.png

Reproduces on Windows 10 (other platforms not tested), on both 82 Release and 85 Nightly.

STR:

1. Ensure Side View is installed. This was a 2018 test pilot experiment.
2. Go to a video site, svtplay.se in my case.
3. Click the "Open Side View" extension icon.
4. Select the site from step 2.
5. In the side view, play a video.
6. Click the PiP button on the playing video. You might have to widen the side view so it shows.

Expected: Video stops playing in side view, starts playing in PiP window.
Actual: Video continues playing in side view, PiP window opens but is solid white.

Expected: Clicking the X to close the PiP window closes it.
Actual: Clicking the X in the PiP window does nothing.

At least one can close the PiP window by alt+tab and then clicking the X there. Other platform methods probably apply.