Printout problems: differences between LO PDF and Ghostscript PDF?

A Windows printout of a PDF produced in Libreoffice/Linux fails (only garbage characters printed). The Windows printout of the same PDF produced with Ghostscript/Linux works perfectly.

Why does it happen? What are the differences between LO PDF export and printing to PDF via Ghostscript? Is it generally safer to use Ghostscript PDF?

May I ask you to please have a look at What information should I include in a question in addition to OS and LibreOffice version? - #4 by ROSt53

OS info is in the question… LO version is (Linux x86)