window.is_start is always 0

I would like to  modify menu for Win + X. It could be quite easy by documentation.

> window.is_start		// Returns true if the window handle is for the Win+X menu

Function window.is_start gives me always 0 / False.

There is a small workaround for this:

`menu(where=@(window.parent.name == null) type='taskbar' ......`