Feedback: If I click the middle mouse button on the documentation here http://daux.io/Getting_Started I get the scroller icon thingy appear. Then I can scroll by moving the mouse right or left and make the content dissapear at which point I go far enough and it bounces back.
This _exact_ same effect happens on Outlook.com if you want to take a look at reproducing it there as well.
It appears there is more content to the right and you are simply scrolling the page (moving the view opposite to direction of mouse movement) and once you hit the edge it seems to invalidate the drag or something similar.
This is just from playing with it; I haven't had time to check the source yet.
This _exact_ same effect happens on Outlook.com if you want to take a look at reproducing it there as well.