As we have experienced a regression in bionic-updates due to gnome-shell
building against newer mutter, I will be conditionally releasing this
package without this bug verified as it seems it is not easily
verifiable by unaffected users. The change is enough self-contained that
it appears to be safe. In case the bug is not fixed, please re-open and
request further fixes.

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https://bugs.launchpad.net/bugs/1784398

Title:
  Changing monitor settings crashes on
  meta_window_wayland_move_resize_internal

Status in gnome-shell package in Ubuntu:
  Fix Released
Status in mutter package in Ubuntu:
  Fix Released
Status in mutter source package in Bionic:
  Fix Released

Bug description:
  [ Description ]

  Under wayland adding a monitor in cloned mode might crash g-s

  See upstream bug: https://gitlab.gnome.org/GNOME/mutter/issues/248

  [ Test case ]

  Open an Ubuntu session on Wayland:

  1. Attach another monitor
  2. Mark as cloned display
  3. Gnome-shell should not crash

  
  [ Regression potential ]

  Global scale for attached monitors could not be properly computed, and
  thus if attaching an HiDPI device, the UI could not be scaled properly

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