[GNC] GnuCash 4.0 printing on MacOS

[Flyeta]

Puzzled by this and can’t see an obvious reason, but GnuCash 4.0 does not recognize any printers in my setup (MacOS 10.14.6 Mojave). The Print dialog shows an empty box with no printers, the Print button is greyed out. The “Page Setup” dialog from the File menu, next to “Format,” shows only “Any Printer for Portable Documents” and a printer cannot be chosen from there.

All this works fine in 3.8, with the same file. 

I rarely print, so hadn’t noticed this until now, but after 2 days the light hasn’t dawned on me; feels like I’m missing something obvious.

Thank you for any suggestions.
Andrew