Followup-For: Bug #893717 Control: reassign -1 mutter/3.28.0-1 Control: affects -1 gnome-shell Control: tag -1 + upstream Control: forwarded -1 https://bugzilla.gnome.org/show_bug.cgi?id=745032
Given the recent comments on that GNOME bugzilla, this is probably a long running issue that has become much worse in 3.28.