Two things that don´t seem right with the scrollbar object.
First, on the PC, the scrollbar object looks different than the scrollbars included in other objects, for example the textbox. The icons for the arrows and the scroll bar on other objects are shadowed and look nicer. The icons in the scrollbar object are very simple. This looks odd when you combine the two on the same form. This is not the case on the device.
Second, scrollbar.maximum seems to be affected by the value you place in scrollbar.largechange. For example if I set the max to 100 and the largechange to 10, scrollbar.value only reaches 91. If I set largechange to 1 then scrollbar.value will go to 100. If I set largechange to 2 scrollbar.value goes to 99.