Comment 26 for bug 1698083

It's not just CSD. Another problem resulting from Wayland not allowing clients to raise or lower themselves is that many desktop notification actions are now no-ops. For example, clicking on Evolution's "You have # new messages" notification used to raise the message list window. Gnome-terminal's command-completed notification used to raise the window that just finished. Now both just dismiss the notification.

(Or should this be a new bug?)