[okular] [Bug 469748] New: Graphical glitches when viewing the attached PDF

[Lorenzo]

https://bugs.kde.org/show_bug.cgi?id=469748

            Bug ID: 469748
           Summary: Graphical glitches when viewing the attached PDF
    Classification: Applications
           Product: okular
           Version: 23.04.1
          Platform: openSUSE
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: lorgar999 at gmail.com
  Target Milestone: ---

Created attachment 158941
  --> https://bugs.kde.org/attachment.cgi?id=158941&action=edit
Problematic PDF

SUMMARY
While viewing this PDF the rendering is intermittent: sometimes changing page
renders it (except a bar on the bottom), sometimes nothing happens. Selecting
areas on a page shows the real content (only in the selected region), when the
previous page is still visible after a page switch.
Chromium of Firefox have no problems with this file.

STEPS TO REPRODUCE
1. Open the PDF attached.
2. Switch pages.

OBSERVED RESULT
Previous page stays on the screen.

EXPECTED RESULT
Next pages appears on the screen.

SOFTWARE/OS VERSIONS
Linux: 6.3.1
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.8

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