Start8 menu fails to stay open on 2nd monitor
The Start8 menu on the second monitor opens and then immediately closes again but only when there is another window open on the second monitor's desktop. The behaviour is worst if an Office 2013 document is assigned to the 2nd monitor. In fact the Office document does not have to be visible, it can be minimised on the taskbar and still the Start8 menu will not remain open. The taskbar on the 2nd monitor is provided by DisplayFusion.
Oddly, this behaviour is seen when the mouse is used to open the menu but not when the keyboard (Windows Key) is pressed.
A solution for this would be appreciated.