[okular] [Bug 470289] New: Pinch to Zoom on a touch screen changes page number

[Archisman Panigrahi]

https://bugs.kde.org/show_bug.cgi?id=470289

            Bug ID: 470289
           Summary: Pinch to Zoom on a touch screen changes page number
    Classification: Applications
           Product: okular
           Version: 23.04.1
          Platform: Archlinux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: okular-devel at kde.org
          Reporter: apandada1 at gmail.com
  Target Milestone: ---

Created attachment 159270
  --> https://bugs.kde.org/attachment.cgi?id=159270&action=edit
Video showing Zoom In/Zoom Out changes page number

SUMMARY
Using Pinch to Zoom with two fingers on a touch screen computer changes the
page number of the document in addition to zooming. This happens for both
Zooming in and Zooming out.


STEPS TO REPRODUCE
1. Open a PDF/DJVU/any other document (with multiple pages) in Okular on a
touch screen computer
2. Try to zoom in/zoom out using two fingers

OBSERVED RESULT
In addition to Zooming in/out, Okular changes the page number

EXPECTED RESULT
Behavior should be identical to what happens when one presses the combination
"ctrl +" or "ctrl -". The document should be zoomed, but the page number should
not change.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux (all updates applied)
(available in About System)
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.106.0

ADDITIONAL INFORMATION
The same bug is present in Okular 21.12.3 in Ubuntu MATE 22.04 running in
another touch screen laptop.

I am attaching a short screen record of the behavior when I zoom in/zoom out
using touch screen.

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