[okular] [Bug 426679] New: Pinch to zoom results in scrolling in large documents

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=426679

            Bug ID: 426679
           Summary: Pinch to zoom results in scrolling in large documents
           Product: okular
           Version: 1.11.1
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: jan.claussen10 at web.de
  Target Milestone: ---

SUMMARY
When you pinch to zoom on a convertible laptop, Okular scrolls up very fast.
The larger the document, the worse it is.

STEPS TO REPRODUCE
1. Open a large PDF in Okular
2. Use pinch to zoom

OBSERVED RESULT
Okular scrolls up

EXPECTED RESULT
It should only zoom

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.1

ADDITIONAL INFORMATION
This bug was also a problem in Xournal++ and they kind of fixed it by stopping
the scrolling process. This results in scrolling up just a bit and eventually
in a trembling effect. I can imagine that this bug is though deep inside of qt5
or the KDE framework.

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