Column widths saved but when file re-opened some have changed?

Using latest version.

Click on columns to set optimal width i.e. all text is visible.

File saved before exit.

When I re-open some of the column widths appears to have changed so i get the red sideways triangle indicating that the text is longer than can be displayed in the column width.

Any ideas?


I also have this problem

Does anyone have any thoughts?

I have a another variant of this problem : Have optimized column widths to fit the sheet in one screen - but after save and reopen all columns are wider. Using .xlsx format.
Would be happy if someone could give a solution to this nuisance.

I’m having the same problem with a 60 column spreadsheet. So annoying to have to always reformat.