https://bugs.kde.org/show_bug.cgi?id=480977

            Bug ID: 480977
           Summary: Strange scroll jump when using ctrl+mousewheel to zoom
    Classification: Applications
           Product: kdenlive
           Version: git-master
          Platform: Appimage
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: User Interface
          Assignee: j...@kdenlive.org
          Reporter: jijili...@yandex.com
  Target Milestone: ---

SUMMARY
I use ctrl+mousewheel to zoom in/out timeline. 
Sometimes it unexpectly scroll left/right a lot (during the period ctrl key
kept pressed down all the way). Was seeing the video clips then with a wheel
scroll suddenly it scrolls to the most right side so that no clip in the view.

STEPS TO REPRODUCE
It doesn't always happend. Don't know the exact way to reproduce.
Usually bug occurs when I've already zoomed in a lot, and want to zoom out.

As I can remember, this bug began about 1~2 month ago. Earlier version didn't
have this bug.

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Latest git master build 1a601b86 kdenlive-master-7417-linux-gcc-x86_64.AppImage
(Qt6)

Just tested latest branch 23.08 build 1193a58b
(kdenlive-release_23.08-7416-linux-gcc-x86_64.AppImage) , it does NOT have this
bug

my system:
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Graphics Platform: X11
Memory: 11.5 GiB of RAM
Graphics Processor: Mesa IntelĀ® HD Graphics

ADDITIONAL INFORMATION

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