Bug 510004

Summary: Cursor leaves trail behind
Product: [Applications] kolourpaint Reporter: Francisco <admin>
Component: generalAssignee: kolourpaint-support
Status: REPORTED ---    
Severity: normal CC: admin
Priority: NOR    
Version First Reported In: 25.08.1   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot showcasing the bug

Description Francisco 2025-09-27 17:00:10 UTC
Created attachment 185321 [details]
Screenshot showcasing the bug

SUMMARY

When using fractional scaling (125%) the default paintbrush tool, eraser, and color eraser, leave trail behind as you move the cursor within the canvas. It seems to happen with 'custom' Kolourpaint cursors.

STEPS TO REPRODUCE
1. Set fractional scaling
2. Open Kolourpaint
3. Start moving the cursor within the canvas

OBSERVED RESULT

Cursor leaves weird trail behind

EXPECTED RESULT

Cursor doesn't leave trail

SOFTWARE/OS VERSIONS
Operating System: Artix Linux x86_64
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.7-artix1-1 (64-bit)
Graphics Platform: Wayland

ADDITIONAL INFORMATION

Please refer to the screenshot attached. All of those small vertical lines are not drawn by me, they are the trail I am referring to.