see here: http://webix.com/snippet/0a98ef7b
when click the left mouse button on the white area(not the yellow master area), context menu is hidden, this is good.
but when click the left or right mouse button on the white area, context menu is not hidden, this is not good. when click the middle mouse button or keypress on the white area, context menu is not hidden too, this is not good.
thanks!