Comment 4 for bug 1577641

Even with the preliminary multi-window support, this bug persists...

Confirmed today on unity8 8.12+16.04.20160504.2-0ubuntu1 from
ppa:ci-train-ppa-service/stable-phone-overlay

Test case: Xmir :0 -rootless --desktop_file_hint=unity8 -sw
Expected: No window to appear
Observed: A black window appears