Stand-alone taskbar has "background" icon; the plugin panel-taskbar has not. Why?

[Rob]

Ah, I just discovered that the plugin panel-taskbar
doesn't seem to have a "Notification area" which could
"Show the system tray in the taskbar".

The stand-alone taskbar does have this.
Why is that missing in the plugin panel-taskbar?

Regards,
Rob.


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