#phosh's #wlroots based compositor phoc now implements the necessary bits of the gtk-shell protocol to raise applications from the background when activated.
The video shows how the shell activates #gnome Settings multiple times while another application (the terminal) is in the foreground. The slight delay is caused by Settings taking a moment to figure out it's already running (https://source.puri.sm/Librem5/gnome-control-center/issues/61)
This is part of phoc 0.1.5 (0.1.5 (https://source.puri.sm/Librem5/phoc/-/tags/v0.1.5).