I get this too with both sonata and guimup. In both cases icon is actually in systray but are badly scaled into 1x1 pixel size. You can see this with other items shifting a little in tray, or as is case with guimup, a one colored pixel appearing in tray. So this is most likely same scaling issue that sometimes causes huge updater icon in tray for me. Also other apps are affected by bad systray icon scaling, Deluge and pidgin to mention few.
-- Some system tray icons are not visible in xfce4-panel, if the panel is set vertical https://bugs.launchpad.net/bugs/139424 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
