A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I am doubtful that MS is "working on it." This issue has been ongoing for years. Lots of complaints, all of them reflecting very similar circumstances (My spreadsheet is fine the way it is, I'm aware of the formatted but unused (yet) cells, it's confusing to other users, etc.) and lots of "helpful" responses (Have you tried optimizing? Can you send me your spreadsheet?) and never anything usable.
My suspicion is that there is something useful to MS in keeping this function in place -- data gathering seems likely -- or this would have been easier to fix.
Yours in the struggle,
rogerpaige