Wayland support

I am using Arch Linux with newest KDE Plasma desktop environment, and the kwin wayland compositor.
When using wayland the client gui cannot launch. I am using the AUR package

client gui launching when the urbackupclientgui is called on Wayland, just like on x11.

Error thrown:
Gtk-CRITICAL **: …: gtk_widget_get_scale_factor: assertion ‘GTK_IS_WIDGET (widget)’ failed

on x11 the client works fine
It would be nice to have an official package btw, the AUR package breaks often.