[kate] [Bug 450678] New: Scrolling conflict

[Jevgeni Han-Iveson]

https://bugs.kde.org/show_bug.cgi?id=450678

            Bug ID: 450678
           Summary: Scrolling conflict
           Product: kate
           Version: 21.12.2
          Platform: macOS (DMG)
                OS: macOS
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: application
          Assignee: kwrite-bugs-null at kde.org
          Reporter: zkogdxdkur at p.monash.edu
  Target Milestone: ---

SUMMARY
***
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STEPS TO REPRODUCE
1. Open a text file long enough to scroll through.
2. Use MacOS's built-in two-finger scroll gesture using the touchpad.

EXPECTED RESULT
When natural scrolling is turned OFF – two fingers are slided down to scroll
down, and vice versa.
When natural scrolling is turned ON – two fingers are slided up to scroll down,
and vice versa.

In both cases, no jitter or lag should exist.

OBSERVED RESULTS
When natural scrolling is turned OFF – scrolling moves up and down repetitively
until it settles. (see https://youtu.be/QvMhfuosyoo)
When natural scrolling is turned ON – same behaviour as above, but only present
when scrolling at the top of the document. (see https://youtu.be/2Hr82n2sB-k)

None of these lead to a crash, but incredibly annoying when trying to do work.

SOFTWARE/OS VERSIONS
macOS: Darwin 21.3.0 x86_64
KDE Plasma Version: N/A
KDE Frameworks Version:  5.90.0
Qt Version: 5.15.2 (built against 5.15.2)

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