Stop breaking things. Please.
Spreadsheets from Excel2011 look different in Excel2019.
The newer version seems to render the same fonts and formats with a somewhat different tracking which leads to different wordwrapping inside cells with multiline text making the last line(s) illegible.
Why do you do this?
If we wanted to spend months of messing around reformatting lots of huge sheets (literally hundres of pages with thousands of such text entries) we would have switched to OpenOffice. Seems like we not only going to waste that time anyway but thousands for a few dozen licences as well.