Bug 509188

Summary: With the pointer over a scrollable view, scrolling visually updates the highlighted item only after the complete animated scroll effect is finished
Product: [Plasma] plasmashell Reporter: Fernando Marcelino Muniz <fernandommuniz>
Component: Application Launcher (Kickoff) widgetAssignee: Plasma Bugs List <plasma-bugs-null>
Status: CONFIRMED ---    
Severity: minor CC: kde, mikel5764, nate, noahadvs
Priority: VLO    
Version First Reported In: 6.4.4   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Fernando Marcelino Muniz 2025-09-06 12:54:25 UTC 
STEPS TO REPRODUCE
1. Have the pointer over an item on Dolphin, then scroll until the pointer is over another item.
2. Have the pointer over an app on "Application Menu > All apps", then scroll in constant speed.

OBSERVED RESULT
The cursor doesn't update by scrolling as fast as it does when moving the pointer.

EXPECTED RESULT
Scrolling should highlight items under the pointer instantaneously, just like it is by moving the pointer.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.16.4-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i5-11300H @ 3.10GHz
Memory: 9 GB of RAM (8.1 GB usable)
Graphics Processor 1: Mesa Intel® Iris® Xe Graphics
Graphics Processor 2: llvmpipe
Manufacturer: LENOVO
Product Name: 82MG
System Version: IdeaPad Gaming 3 15IHU6

ADDITIONAL INFORMATION
There is a similar issue by scrolling from an hyperlink, but I'm not sure if that's a Plasma or Firefox issue.
Comment 1 Fernando Marcelino Muniz 2025-09-06 13:25:46 UTC 
Scrolling highlights the items under the pointer normally on the Clipboard, System Settings, and scrollable desktop.