A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Does this width change matter?
No, that is normal behaviour in Show Formulas mode. The column are automagically extended as most formulas are wider than the values they represent.
With those possibilities out of the way, I could only suggest some form of cell locking within document protection (Review tab, Changes group, Protect Sheet options). Is it under a form of Protect Worksheet with some cells formatted as locked and some not?
Hit CTRL+A (Select All), then right click for Format, Protection tab. Is the Locked option checked, unchecked or semi-checked (checkbox colour-filled). If semi-checked either lock or unlock then all and check the Protect Sheet options as above.
(instructions as above for Excel 2007, Excel 2010 may vary slightly)
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