Bug 505053

Summary: Processes tab: Unwanted inertial scrolling
Product: [Applications] plasma-systemmonitor Reporter: Alexander Potashev <aspotashev>
Component: generalAssignee: KSysGuard Developers <ksysguard-bugs>
Status: RESOLVED WORKSFORME    
Severity: minor CC: ahiemstra, john.kizer, nate, plasma-bugs-null
Priority: NOR    
Version First Reported In: 6.3.4   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Alexander Potashev 2025-05-31 11:24:23 UTC 
SUMMARY
Processes tab: Unwanted inertial scrolling when dragging column headers left/right.

STEPS TO REPRODUCE
1. I have animation disabled in SystemSettings (i.e. switched to fastest animation)
2. LMB click and hold a column header (e.g. "Memory")
3. Flick to the right (or left), i.e. move mouse pointer quickly and release LMB soon.

OBSERVED RESULT
Scrolling continues after I release LMB, i.e. inertial scrolling. There seems to be no way to disable inertial scrolling.

EXPECTED RESULT
Scrolling should stop when I release LMB.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 41
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.14.0
Qt Version: 6.8.2
Kernel Version: 6.13.11-200.fc41.x86_64 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 15.4 ГиБ of RAM
Graphics Processor 1: Intel® HD Graphics 530
Graphics Processor 2: NVIDIA GeForce GTX 960M

ADDITIONAL INFORMATION
Comment 1 Nate Graham 2025-06-03 22:15:14 UTC 
The table headers aren't draggable for me at all with current git master, so I can't confirm this bug. :/

I imagine it happens for you with the table headers on the Applications page too, right?
Comment 2 John Kizer 2025-06-15 05:18:42 UTC 
Just to clarify - is what you're describing a situation where you have more columns than can fit in the window/view in the Processes tab, and you're horizontally scrolling by clicking and holding on a column header, then making a "flicking" motion with the mouse, simulating a touch input flick?

If I can ask, is there a reason you wouldn't use the horizontal scrollbar for precise movement of the window contents in that situation? I'm no expert, but having inertial scrolling seems preferable in what I would assume is the majority case of folks using column headers like that - making a flicking motion from within the contents of a window/frame to scroll seems like a touchscreen workflow more than a mouse input one?

Thanks!
Comment 3 Bug Janitor Service 2025-06-30 03:47:24 UTC 
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 4 Bug Janitor Service 2025-07-15 03:47:26 UTC 
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.
Comment 5 Alexander Potashev 2025-08-31 11:33:19 UTC 
> The table headers aren't draggable for me at all with current git master, so I can't confirm this bug. :/

I'll re-test in Plasma 6.5 in a few months once it reaches my distro version.

> I imagine it happens for you with the table headers on the Applications page too, right?

Yes.

> If I can ask, is there a reason you wouldn't use the horizontal scrollbar for precise movement of the window contents in that situation? 

Flicking was accidental. I probably wanted to click in a column to change sorting order, but held the mouse button for too long.