How-to: White List Applications
Some Systray icons for QT-based programs such as Skype and VLC are automatically converted into indicators by sni-qt. Wine, Java, scp-dbus-service and the Update-notifier are white-listed by Ubuntu, but you can white-list all applications.
In dconf-editor, navigate to desktop > unity > panel
And to get the equivalent of the Systray in the Notification Area for all applications, change the default list to [‘all’].
Or you can add program names individually, in single-quotes, comma-separated by coma, e.g., 'Wine', 'Skype' etc.
To reset, use the default reset list; the value is shown in the editor itself in the bottom panel below the edit window, ['JavaEmbeddedFrame', 'Wine', 'scp-dbus-service', 'Update-notifier'] or click on “Set to default.” RC