Data Viewer bottom item doesn't show tool tip w/ scroll bar
Operating system version
Mac OS x 10.6.8
Description of the issue
If I load up the data viewer with enough items such that a scroll bar is required to view them all, the bottom item in that list will NOT have a pop-up tool tip on hover-over. See the attached screen shots. It is one image showing three different data viewer states: 1st state shows the problem: pointing at the 'Value' column of the last item in the list and not pop-up is displayed showing the full value. 2nd one shows the same window, but pointing at the 2nd to last item; it generates a pop-up. 3rd one is point at the last item again, but this time without the scroll bar present.
Steps to reproduce the problem
Fill the data viewer so it is full (no scroll bar): pop-up tooltip shows up fine.
Add one item (above the bottom item) so that a scroll bar appears in the data viewer window: bottom item has no pop-up tooltip when hovered over.
Remove one item to remove the scroll bar: Bottom item regains it's tooltip on hover.
In each case it is the same 'item' being hovered over, the same one at the bottom of the list (i.e. the added item gets put in the middle of the list, not added at the bottom).
Tool tip to show up, on hover, with the result of the calculation being watched.
No tool tip
Exact text of any error message(s) that appear