Bug 372556

Summary:	When scrolling using the mouse wheel, occasionally it scrolls the wrong way
Product:	[Plasma] plasmashell	Reporter:	Joe Bramas <htcevo17>
Component:	general	Assignee:	David Edmundson <kde>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	bshah, plasma-bugs-null
Priority:	NOR
Version First Reported In:	5.7.5
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Joe Bramas 2016-11-16 20:46:32 UTC

Using Natural Scrolling via xinput
http://askubuntu.com/questions/411034/kubuntu-natural-scrolling-touchpad-only-but-not-for-mouse/416542#416542

When scrolling large texts rapidly, the scrolling occasionally for a split second goes the wrong way, even if the wheel is constantly rotated in a single direction

This is most apparent in a 10-window high or larger page in Chromium when constantly scrolling towards the bottom. Instead of constantly moving towards the bottom, the scrollbar occasionally stops and sometimes goes a little bit the other way.

The touchpad works fine.

Comment 1 Joe Bramas 2016-11-16 20:54:29 UTC

In Chromium, it is also visible at the very bottom of the page, when the page "bounces back" upwards instead of being held firm at the final scroll position

Comment 2 Joe Bramas 2016-11-16 21:00:53 UTC

The bottom edge symptom is also exhibited by LibreOffice Writer

Comment 3 Joe Bramas 2016-11-17 19:17:30 UTC

This was caused by a faulty mouse
replacing it with another same make/model removed the problem
https://bugs.kde.org/show_bug.cgi?id=372556