Hmmm I think I found a bug or something: set property "mode" to 1 (kinetic scrolling), do some scrolling, then set it to 0 (normal/push scrolling ). The rubberband effect when you get to the end of the list will be gone then. you get it back, when you set "mode" back to 1, but in normal mode you can scroll the list out of the viewport and it wont come back.
Can anyone confirm that?