Wayland + mixed dpi setups + xwayland apps

Has there been any progress in Gnome regarding the scenario on the title? Last time I tried this, only GTK apps would show correctly on monitors with different dpi settings (eg 4k laptop + 1080 external). Many xwayland apps would show incorrect scaling when moved to a different monitor.

Current kde plasma in wayland seems able not only to correctly scale apps on different screens, but also when moving apps from screen to screen there will be no sudden window resize/rescale once the app was fully contained on the display (like gnome in bionic does).