FIX. RadGridView - the vertical scrollbar of the grid when it is in paging should be updated if the rows on the last page are less than the pagesize and it is not needed
Workaround: subscribe to the PageChanged event and update the scroll range.
private void RadGridView1_PageChanged(object sender, EventArgs e)
{
this.RadGridView1.TableElement.RowScroller.UpdateScrollRange();
}