DataGridView Vertical Scrollbar bug?

I'm loading my DataGridView with 10 rows. 5 of those rows fit on the screen without having to scroll. The verticla scrollbar will scroll enough to see the 6th row, but will not scroll to view the last 4 rows. I can click on a cell and use the arrows to display the last 4 rows. When I resize the form (which resizes the DataGridView), the scrollbar is fixed and will not allow scrolling to see all 10 rows. How can I fix the scrollbar to scroll properly without having to resize the form/DataGridView?