[okular] [Bug 467328] New: Okular mismanages fonts embedded in PDF document when printing

[Sergio]

https://bugs.kde.org/show_bug.cgi?id=467328

            Bug ID: 467328
           Summary: Okular mismanages fonts embedded in PDF document when
                    printing
    Classification: Applications
           Product: okular
           Version: 22.12.2
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: sergio.callegari at gmail.com
  Target Milestone: ---

I am encountering issues trying to use Okular because it visualizes documents
correctly, but it corrupts them when printing.

This happens only with certain PDF documents that embed fonts. A typical case
is represented by documents generated by Libreoffice using the Source Sans 3
OTF font from Adobe. When I open these PDF files in okular they display
correctly. However, when I try to print them the font becomes unreadable. If I
send the same file directly to the printer using the `lp` command, then it
prints just fine.

Interestingly, also the *print preview* produced by Okular shows the font
breakage.

I am attaching a test document to be used with the following steps to
reproduce.

STEPS TO REPRODUCE
1. Open the test document, see it is shown correctly on screen
2. File->Print preview, in the preview the font is unreadable
3. File->Print, in the printout the font is unreadable

OBSERVED RESULT

In the print preview and in the printout the font is unreadable

EXPECTED RESULT

The print out should match what is displayed on screen

SOFTWARE/OS VERSIONS

Operating System: Manjaro Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-4750HQ CPU @ 2.00GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Pro Graphics P5200

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