@leocg I have been having the same issue. When a video is in fullscreen and I try to exit(either by pressing F, F11, or Esc), the browser itself stays fullscreen and I have to exit fullscreen again by either pressing F11 or using the right-click context menu.
Visually:
- I am in a video.
- I exit fullscreen using either F, F11, or Esc
- It exits properly for a moment(maybe 1/5 of a second)
- The browser re-enters fullscreen with the prompt "Press [F11] to exit fullscreen."