Show the us the problem, provide steps and screenshots to replicate the issue. Just saying you can't print doesn't help us help you.

I see the same issue in the "See also" section on the right. https://support.mozilla.org/en-US/questions/1346444 Let me see what happens.

No black ink. ;-)) Maybe someone else wants to use their ink to test.

Does the map appear for "Save to PDF" or "Microsoft Print to PDF"?

Try printing with the system dialog (link at bottom of print preview settings).

Thanks for your replies. I tried using 'print to pdf' before I posted - you get pretty much the same thing as reported in the achived post (which is also the one at the top of the 'see also' list - an outline and title and, maybe, a small fraction of the map which can be a narrow strip along the full width of the bottom or a small rectangle in the top or bottom left corner.

I'm using Windows 10-pro., by the way and have tried printing other web pages (to pdf) and all appeared to come out fine.

Print to PDF works for me on Windows 10 with OpenStreetMap.

Does it still happen in a new profile? An easy way to test a new profile is to install Developer Edition and see if it happens there or refresh your existing profile.