Comment 20 for bug 1724307

Stephan Fabel, while I wouldn't say this is fully root caused, due to how debugging GUI stuff is not my focus, I'll mark this Triaged for now. However, given Ubuntu is moving away from Unity going forward as per https://insights.ubuntu.com/2017/04/05/growing-ubuntu-for-cloud-and-iot-rather-than-phone-and-convergence/ you may want to use a GNOME based session going forward to avoid this problem.