When hiding/unhiding columns in the Gridview, the horizontal scroll bar disappears

In the List Grid, right click on any header and select Columns. Then proceed to hide columns until the scroll bar disappears. Now unhide columns until they can no longer fit in the grid and the horizontal scroll bar doesn't reappear

Actual: The scroll bar never appears
Expected: The scroll bar should appear again

This is not browser dependent. I've tested in IE and Chrome.