Show the full column name in a tooltip when the column headers have been scrolled past
If a table cell is selected and you have scrolled down so that the column headers are not visible, the A B C column headings will be replaced with the column names. This is a great feature, but column names often span multiple lines, so the column names get cut off.
If the user hovers over one of these column names, the full column name should appear in a tooltip. This would be especially useful for larger tables with columns that begin with the same words (e.g. Cost With Tax, Cost Without Tax).