Corruption of xlsx file

[Te-k]

Hi,

I encountered an issue today where mat2 was corrupting xlsx file then read with Excel version 2604. I can't share the file publicly but happy to share in private if it helps debugging. I checked the modifications done on Excel file, and it seems that the xml attribute sorting is what is creating the issue. The file works if I comment this part:

        #try:
        #    _sort_xml_attributes(full_path)
        #except ET.ParseError as e:  # pragma: no cover
        #    logging.error("Unable to parse %s: %s", full_path, e)
        #    return False

I am guessing the next step would be to start excluding xml files from sorting and check when it fails?