LibreOffice Calc spreadsheet does not record or compare changes in text formatting.
Enter a non-zero length string in any cell
Turn on record changes
Select text in cell and change format to BOLD
Observe Edit/Changes/Show does not have any recorded changes.
Similar behavior comparing spreadsheets with only formatting changes.
This isn't an enhancement but a bug. Going to change to BUG -> Minor -> Low
Thanks for reporting
This is actually not a bug but a known limitation. We don't track formatting changes, but only hard value changes and that's intentional. Setting it to enhancement.
FYI Excel has the same limitation.