[okular] [Bug 508518] New: GPL Ghostscript 10.05.1: Unrecoverable error breaks image merge after sign

[Richard PALO]

https://bugs.kde.org/show_bug.cgi?id=508518

            Bug ID: 508518
           Summary: GPL Ghostscript 10.05.1: Unrecoverable error breaks
                    image merge after sign
    Classification: Applications
           Product: okular
      Version First 25.08.0
       Reported In:
          Platform: EndeavourOS
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: richard.palo at free.fr
  Target Milestone: ---

SUMMARY
Okular drops background image in _signed file

STEPS TO REPRODUCE
1. open pdf to sign
2. invoke tools -> digital signature
3. select alias and background image
4. sign

OBSERVED RESULT
fine prior to saving, 
but in the _signed file:

Box with text Richard PALO
Signé par : Richard PALO
Date : 2025-08-20 16:07:38 CEST
but background image not shown 

and a bunch of the following on command line
QPixmap::scaled: Pixmap is a null pixmap
... and finally
GPL Ghostscript 10.05.1: Unrecoverable error, exit code 1

EXPECTED RESULT
box with background image and superposed text indicated above

SOFTWARE/OS VERSIONS
Operating System: EndeavourOS 
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Kernel Version: 6.12.42-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5500U with Radeon Graphics
Memory: 32 Gio of RAM (30.7 Gio usable)
Graphics Processor: AMD Radeon Graphics
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: MINIPC PN51-E1
System Version: 0510

ADDITIONAL INFORMATION
using safenet with eToken 5110 SC eIDAS token from CertEurope

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