When using multiple screens in Mavericks, right clicking puts the menu far too high. In the first attachment, for example, I right clicked on line 60 (highest resolution "most space"). In the third attachment, I right clicked on line 63 (Normal resolution "Best for retina display"). I am guessing that it is calculating the position of the menu based on the total height of all stacked screens, as the behaviour changes if I change the screen resolution. See my setup in attachment 2. The laptop is the bottom left screen.