Waylandsink: "xdg_surface has never been configured" error when using wlroots based compositor (e.g. sway/tinywl)

Pipeline: "gst-launch-1.0 videotestsrc ! waylandsink" Gstreamer: 1.16.2 Compositor: Sway

Enabled WAYLAND_DEBUG=client and logs show: log.txt

Interestingly this same pipeline works in Weston.

From IRC, I am told that wl_surface.attach MUST NOT HAPPEN BEFORE commit()

No surface is visible on the display for this issue, as with a previous issue that seemed similar: #933 (closed)