[Bug 1950040] Re: Wayland Screensharing broken in Ubuntu 21.10

[Esokrates]

Relevant output in journal:

Nov 06 11:14:08 pc xdg-desktop-por[6355]: Unhandled parent window type 
Nov 06 11:14:08 pc xdg-desktop-por[6355]: Failed to associate portal window with parent window 
Nov 06 11:14:08 pc GeckoMain[11893]: gdk_wayland_window_configure: assertion 'height > 0' failed

Searching for the first two lines reveals others in the Community have
the same problem, see for example
https://askubuntu.com/questions/1372140/obs-wayland-screen-capture-not-
working-on-gnome

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https://bugs.launchpad.net/bugs/1950040

Title:
  Wayland Screensharing broken in Ubuntu 21.10

Status in gnome-shell package in Ubuntu:
  New
Status in pipewire package in Ubuntu:
  New
Status in ubuntu-meta package in Ubuntu:
  New
Status in xdg-desktop-portal package in Ubuntu:
  New

Bug description:
  Freshly installed Ubuntu 21.10, screen sharing does not work with any
  browser, tested the following options:

  - Firefox snap
  - Firefox deb
  - Chromium snap
  - Chromium flatpak

  Steps to reproduce:

  1. Go to https://www.webrtc-experiment.com/Pluginfree-Screen-Sharing/#7325517390736006
  2. Select to share the whole desktop in the xdg-desktop-portal
  3. Notice the orange screen share indicator in Gnome-Shell but actually nothing is shared in the browser.

  This should be handled high priority since this is a critical feature
  during the pandemic.

  Filed against ubuntu-meta since I don't know exactly which package to
  blame, whether it's pipewire, xdg-desktop portal or some problem
  directely with mutter / gnome-shell, please reassign accordingly.

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