[okular] [Bug 468360] New: Some scanned PDF's with ocr are white but knows it is text

[bidino1542]

https://bugs.kde.org/show_bug.cgi?id=468360

            Bug ID: 468360
           Summary: Some scanned PDF's  with ocr are white but knows it is
                    text
    Classification: Applications
           Product: okular
           Version: 22.12.3
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: covamihail at gmail.com
  Target Milestone: ---

Created attachment 157998
  --> https://bugs.kde.org/attachment.cgi?id=157998&action=edit
Okular and Foxit displaing the same pdf and selecting the same text

Hello!
I have a problem with okular in the last few days, and I have a suspicion that
might go not only with okular as pdf app. So I have some pdf with scanned and
ocr books, but the okular does not shows them right. It knows it is text there
because I can select it, but it shows it like selecting white or invisible
text. Firefox and Foxit shows them right, but Okular does not, and I tried
Evince and it does the same thing. I attached some examples too.

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