Headers & footers are on saved PDF, but don't print
When I save web pages as a PDF with Firefox, headers and footers appear on the saved PDF. However, if I later print the saved PDF, neither the headers nor footers are printed.
I'm currently using Firefox 106.0.5, but inability to get the headers & footers to print from this setup (MacOS Sierra 10.12.6 and a Brother MFC-7460DN printer) has been going on at least 8 months or more and through quite a few Firefox versions. At some prior point the headers and footers did print when I'd saved the PDF with Firefox. I have not changed the MacOS or the printer, so I'm pretty sure something with Firefox changed.
Is there a way I can get the headers and footers to print on PDFs I saved with Firefox using this older computer running MacOS Sierra? This can be important if I need the PDF as proof of payments etc. As mentioned, the headers and footers are visible on the PDFs on my computer but not when I print out those same PDFs.
The headers and footers do print if I've saved PDFs using Safari (12.1.2) on the same older mac computer running Sierra, and with Firefox on a newer mac computer running macOS Big Sur 11.6.1. (both using the same Brother printer mentioned above). So, I would say there doesn't seem to be a problem with a printer setting.