Building on top of Marius' patches and improving on them, Lomiri now centers GTK windows properly and has Wayland subsurface support improved. It looks almost as one expects, minus the titlebar+headerbar shenanigans of GTK. There are still some issues which need to be tackled, but it is a good start.

Those who claim Ubuntu's phone history to be just a short phase, the "Rise and Fall" and whatnot, are just bystanders.