Printer icon disappears from System Tray after applying NIS Hotfix

My Windows 7 System Tray contains an icon for my Canon printer and is set to "show icon and notifications" - i.e. it is displayed all the time.

Whenever I do a manual Norton LiveUpdate that results in a Hotfix being available, and I choose "apply now", my printer icon is no longer displayed after the Hotfix has been applied, even though it is still set to "show icon and notifications". The only way I can restore the printer icon is to restart my computer.

Does anyone else have this problem or does anyone know how to fix it? It's obviously not a showstopper, just another annoying issue that has recently occurred (I think after upgrading to NIS version 22.5.2.15).