Bug 463054 - With horizontal panel, wide scrollable Thumbnail list not scrollable with scroll wheel on Wayland
Summary: With horizontal panel, wide scrollable Thumbnail list not scrollable with scr...
Status: CONFIRMED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Task Manager and Icons-Only Task Manager (show other bugs)
Version: 5.26.4
Platform: Arch Linux Linux
: NOR minor
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords: wayland
Depends on:
Blocks:
 
Reported: 2022-12-15 00:51 UTC by iodreamify
Modified: 2024-02-10 16:36 UTC (History)
2 users (show)

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Description iodreamify 2022-12-15 00:51:15 UTC 
SUMMARY
With a horizontal panel, if you open too many windows and the thumbnail list in the icon-only task manager no longer fits on the screen so it gets a horizontal scrollbar, the usual mouse wheel shortcut for scrolling doesn't work anymore(i believe this is a regression and you used to be able to do this, or at least you could drag the thumbnails with the mouse pointer itself). The only way to scroll is to drag the scrollbar with the mouse. 

Scrolling with a vertical panel works. 

Also tested on X11: if i hold down Alt and scroll with the mouse wheel it does scroll. 
On Wayland no shortcuts work.       

STEPS TO REPRODUCE
1. Fill up icon only task manager with many thumbnails so it gets a scrollbar
2. Hover over one of the thumbnails.
3. Try to scroll with the mouse wheel.

OBSERVED RESULT
Nothing happens

EXPECTED RESULT
The thumbnails scroll horizontally

Operating System: Arch Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
Kernel Version: 6.0.12-arch1-1 (64-bit)
Graphics Platform: Wayland
Graphics Processor: Mesa Intel® HD Graphics 3000
Comment 1 Nate Graham 2022-12-15 19:15:06 UTC 
Can confirm.