How can I prevent extra blank pages when printing label merge file?

I’ve prepared a mailing label merge file and connected to the database etc. When I print, I get extra blank pages inserted after every page - as if there’s a form feed stuck in there somehow. Any help in solving this would be appreciated.

Possibly related (blank labels instead of pages): How can I suppress the blank label after each address label?

I recently came across this problem too. Try Tools>Options>LibreOfficeWriter>Print, then uncheck Print automatically inserted blank pages

I have a possibly related problem exporting to pdf…but that solution didn’t seem to work for me! Writer keeps adding back in two pages every time I export to PDF

The solution above (Tools>Options etc), doesn’t work. What does work is
File-> Printer Settings → Options - Uncheck ‘Print automatically inserted blank pages’
Version 6.4.4.2