Bug 515086 - KolourPaint goes extremely unresponsive and laggy whenever resizing any images
Summary: KolourPaint goes extremely unresponsive and laggy whenever resizing any images
Status: REPORTED
Alias: None
Product: kolourpaint
Classification: Applications
Component: general (other bugs)
Version First Reported In: 25.12.1
Platform: Arch Linux Linux
: NOR major
Target Milestone: ---
Assignee: kolourpaint-support
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2026-01-26 03:53 UTC by SimplySand
Modified: 2026-01-26 03:53 UTC (History)
0 users

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

Attachments
Recording of an image being resized (3.51 MB, video/mp4)
2026-01-26 03:53 UTC, SimplySand 		Details
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Description SimplySand 2026-01-26 03:53:56 UTC 
Created attachment 188883 [details]
Recording of an image being resized

SUMMARY
KolourPaint goes extremely unresponsive and laggy whenever resizing any images.

STEPS TO REPRODUCE
1. Paste an image into KolourPaint.
2. Drag its corners, and try to resize it.

OBSERVED RESULT
Editor goes unresponsive and the image expansion seems to have some latency of sorts when resizing an image.

EXPECTED RESULT
When resizing an image, I expect it to follow the cursor without having noticeable latency.

SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1

ADDITIONAL INFORMATION
My system is beefy system with 16 GB of RAM. Other apps such as LibreOffice Writer do not have such a latency while resizing images.