Comment 30 for bug 762193

I have not experienced any problems with the xchat icon in the Launcher or Switcher in the last few Ubuntu release.

However, choosing the "Minimize to Tray" option in the dialog presented when closing the xchat application causes the icon to disappear from the Launcher and Switcher even though the application continues to run. There is no way to reopen the GUI for the running application: the only option is to use the command line to kill the application instance.

A quick glance through the xchat source code reveals that the application itself was written to assume a Gnome2 system tray is present and does its own window management accordingly.

I don't believe there is much unity can do if an application is misbehaving like that. I think the solution lies in fixing the application.