Which demo are you using? Mine or LaurenceBedford's?
In the demo I posted, the scroll is limited by the size of the Panel object. You can manually place all your menu buttons on it, resize Panel to cover all buttons. Then Pin buttons to the Panel and the scroll should work correctly.
Also, re-download the demo, I updated it a few minutes ago.
Im using yours. I had pinned the buttons to the panel and resized the panel accordingly, however when I scroll, I can simply scroll the panel off the screen, with all the buttons on it.