A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I have the same problem, as soon as I start to cut and paste cells/rows around, these comment no longer display correctly.
I think the position and size of the comment is not related to the actual cell (say 10 pixel above and right to cell),
as soon as you move cells around, that formulae break, and it has the size/position all mess up.