meta+drag does not work if on a subsurface
I'm working on GStreamer waylandsink and one issue I had was that I could not drag the bare window (decoration less) created by gst-launch-1.0 debugging tool. At first, I though it was an issue on my side, but I hacked together a standalone wayland app which is simply a toplevel surface (green) with a subsurface over it (blue), and that was enough to reproduce the issue.
Edited by Nicolas Dufresne