Calc - A second manual page row break causes incorrect print formatting

I have a Calc spreadsheet with 2 page row breaks. Several months ago this used to print correctly, but I have recently upgraded to 5.1 and it won’t print correctly now.

Print preview shows the correct formatting, but the print dialog shows a small thumbnail of each page and that is what actually prints. This happens for every printer I select. Removing one of the 2 manual page row breaks allows everything to print correctly again (apart from the page breaks).

Please verify the option: Menu/Tools/Options/LibreOffice calc/Print - Pages - Always apply manual break.