Content rendered via HTML doesn't print on some printers

[ZachSARAO]

Description of the bug

When printing a PDF rendered via PyMuPDF, I have found that physical printouts omit text in some cases:

insert_htmlbox(
    some_rectangle,
    f'<div style="font-family: Helvetica; font-weight: bold; text-align: center; font-size: 8px; line-height: {height}px; color: #587BBD;"><b>{title}</b></div>',
)

I can see that content on PDF on screen, and printing out on my printer that text is visible. However, a different printer omitted this content.

Please let me know if I'm misusing the library in any way / or in general what could cause this?

How to reproduce the bug

A PDF produced via PyMuPDF prints correctly on some printers, but not on others.

PyMuPDF version

1.23.9

Operating system

Linux

Python version

3.10

[JorjMcKie]

This is obviously a question and no bug report.
Transferring to "Discussions".