Bug 509882 - Swiping to scroll the application categories selects them
Summary: Swiping to scroll the application categories selects them
Status: CONFIRMED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Application Launcher (Kickoff) widget (other bugs)
Version First Reported In: 6.4.5
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-09-24 18:46 UTC by tramonti.luca18
Modified: 2025-10-01 12:55 UTC (History)
5 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
The reporter is shown swiping the categories, a good amount of times swiping selects the category (1.10 MB, video/webm)
2025-09-24 18:46 UTC, tramonti.luca18
Details

Note You need to log in before you can comment on or make changes to this bug.
Description tramonti.luca18 2025-09-24 18:46:19 UTC
Created attachment 185223 [details]
The reporter is shown swiping the categories, a good amount of times swiping selects the category

SUMMARY
If the application launcher categories are enough for the list to be scrollable, attempting to scroll on it by swiping on the touch screen will also unexpectedly select the category

STEPS TO REPRODUCE
1. Have enough categories for the left side of the application launcher (the categories list e.g. favorites, development, games etc.) to overflow and be scrollable
2. Swipe on the categories list with touch input

OBSERVED RESULT
The categories select while scrolling

EXPECTED RESULT
The swipe action cancels or blocks selecting the categories

SOFTWARE/OS VERSIONS
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Fedora Linux 42 Kinoite (6.16.7-200.fc42.x86_64 (64-bit))
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2

ADDITIONAL INFORMATION
I have attached a recording of the bug in action
Comment 1 TraceyC 2025-09-24 20:24:52 UTC
I can reproduce the behavior on git-master
Notably, it doesn't seem possible, using touch, to scroll. with the scrollbars so you have to drag the list without them
Much of the time, dragging the categories selects one and dragging the list of favorites selects one app, initiating drag to reorder
Comment 2 Marco Martin 2025-10-01 12:05:12 UTC
(In reply to TraceyC from comment #1)
> I can reproduce the behavior on git-master
> Notably, it doesn't seem possible, using touch, to scroll. with the
> scrollbars so you have to drag the list without them
> Much of the time, dragging the categories selects one and dragging the list
> of favorites selects one app, initiating drag to reorder

that particular issue should be fixed now, after i splitted  touch handling on a separate taphandler for regular items.

The original isssue of the bug, selecting the category when scrolling to drag them remains valid
Comment 3 Marco Martin 2025-10-01 12:55:23 UTC
however, selecting on press is something that has been done by design to make it feel very fast. and i'm not sure if this can be put well together with not selecting when dragging.

unless press to select is disabled on touch only, or some timeout is introduced to cancel the selection if a drag happens before the timeout