I am marking this a duplicate of bug 1671823 since the original reporter confirmed that the fix for that bug fixed his issue here.
If anyone else is still having problems with gnome-shell/gdm/mutter 3.23.91 after installing gnome-shell 3.23.91-0ubuntu3, please file a new bug.
I am marking this a duplicate of bug 1671823 since the original reporter confirmed that the fix for that bug fixed his issue here.
If anyone else is still having problems with gnome-shell/ gdm/mutter 3.23.91 after installing gnome-shell 3.23.91-0ubuntu3, please file a new bug.