Currently the horizontal positioning of the menus is not adjusted in any way, if the menu goes off-screen. This is extremely frustrating when building menus with multiple nested levels.

I know the direction of the menu can be set to open either to the left or to the right, but this is not ideal in a responsive website where the position of the menu items is not fixed and can change on any screen. Ideally the dropdown should know when a menu goes off-screen and open it in the opposite direction.

JSFiddle: http://jsfiddle.net/znhby35f/

Screenshot:

I'm not sure if this is already something confirmed or in progress, but I couldn't find a similar issue addressing this exact problem.