So here's the deal. I'm running Windows 10 (Release) and Start10 (latest build). I've selected in Taskbar and Start Menu properties, "Show taskbar on all displays". When I click on the Start icon from any screen (I have 2-27" monitors) other than my main laptop screen, It opens the Start Menu on the main laptop screen. My expectation would be to open the Start Menu on the screen it was invoked from.