Created attachment 7508 Icon dnfdragora-updater is duplicated in the Notification area. Description of problem: Icon dnfdragora-updater is duplicated in the Notification area (attachment). Steps to Reproduce: 1. Update your system, then remove Item Notification area from the top panel. 2. Add it back. Actual results: Icon dnfdragora-updater is duplicated once. Expected results: One icon is enough to represent an application.
I'm not sure this is really a problem of the xfce4-panel - I would suspect that somehow dnfdragora-updater registers its trayicon twice. At least I've never seen this behavior with any other application...
In Fedora 27, present issue is tied to version-release dnfdragora-1.0.1-6.git20170505.2a3b056.fc27.noarch. Each icon has its own process (two processes); Can be checked from System Monoitor. Since version-release dnfdragora-1.0.1-8.git20171229.24e4647.fc27.noarch, icon is no more duplicated.
Thanks for checking back. Closing as invalid then.