https://bugs.kde.org/show_bug.cgi?id=500875

            Bug ID: 500875
           Summary: reducing plasma mouse scrolling speed interferes with
                    browsers 'smooth scrolling' setting
    Classification: Plasma
           Product: plasmashell
           Version: git-stable-Plasma/6.3
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: plasma-b...@kde.org
          Reporter: slartibar...@gmail.com
                CC: k...@davidedmundson.co.uk
  Target Milestone: 1.0

I'm on the latest plasma git version and since the last update (28.02.25) i
experience a strange behavior in mouse scrolling reactivity in browsers.

My setup is a logitech M525 mouse which has a 'scroll wheel high resolution'
setting (i'm using solaar to activate this).
My systemsettings > mouse > scrolling speed is two tickmarks below the default
(set towards 'slower')

I was using this setting since plasma5 and also in plasma6 without any problems
in browsers like chromium/firefox/brave
Since the last update, if you scroll in those browsers in a longer (vertical)
webpage, i experience stuttering especially in the downward scroll (that is,
scrolling the web-content to the top of the screen to read more of the page).

This can be somewhat fixed by scrolling up a bit and down again - then the
content moves as expected.
This happens a lot if you move the scrolling wheel slowly, giving it a more
pronounced push/scroll, it seems to work flawlessly.

My current workaround is to disable smooth scrolling in firefox' settings or in
chrome://flags experimental settings.
Then all is fine again even at slow scrolling speeds

Any idea what caused this sudden change in scrolling behaviour?

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