dnd not working under mutter 42
I'm trying the dnd examples in gtk4-demo, in particular trying to drag a color in the clipboard demo.
It works fine with GDK_BACKEND=x11 (ie xwayland). It also works fine under weston. But under mutter 42.2, I can't get a dnd to start.
Here are WAYLAND_DEBUG logs with weston: LOG.weston
and with mutter: LOG.mutter