Minimwatch problems on ubuntu gnome

[Pastim]

I have recently moved from the ubuntu (17.04) unity desktop to ubuntu gnome. I'm just getting used to this, since ubuntu is dropping unity next year.

When I run minimwatch on unity it works fine. On gnome it starts OK, but I can't right click on the icon to see the properties, log, or execute commands such as rescan or exit.

The icon appears on the desktop, at top left, and also on the bar at bottom left.