Hi there! I'm using FireTray add-on to have icon with my number e-mails in system tray. Now is gone and I couldn't turn it back. Add-on settings are the same as always. Mozilla Thunderbird: 24.6.0 FireTray: 0.4.8 When I close Thunderbird window - quit. When I minimize window - it minimized Thunderbird. These options are activated. I mean when I do these actions, Thunderbird should go to system tray. My Ubuntu version and programs are up-to-date.