Bug 461597

Summary: Strange Banding Visible When Crop Tool is Being Dragged into the Canvas
Product: [Applications] krita Reporter: LaTor <pinknalu>
Component: ToolsAssignee: Krita Bugs <krita-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: ahab.greybeard, ginoba, halla
Priority: NOR    
Version First Reported In: nightly build (please specify the git hash!)   
Target Milestone: ---   
Platform: Mint (Ubuntu based)   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Crop Tool Outline Banding after moving

Description LaTor 2022-11-08 15:59:18 UTC 
SUMMARY
***
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Since the Nov 2nd build, when I use the Crop Tool, there is a strange banding that appears when the tool is in use and being dragged into the canvas/image, but not when it is adding more canvas, and it disappears when I zoom in or pan the canvas.

STEPS TO REPRODUCE
1. Activate the Crop Tool on a canvas.
2. Drag the Crop Tool into the canvas to remove the image, not to gain more canvas.
3. Banding appears when in use and disappears when the user zooms or pans the canvas.

OBSERVED RESULT
A strange banding appears when in use.

EXPECTED RESULT
No banding should appear and the tool should glide smoothly on the canvas.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Linux Mint 21 Vanessa on KDE Plasma
(available in About System)
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I have also reported this and another bug on Krita Artists at https://krita-artists.org/t/latest-nightly-build-crash/51204.
Comment 1 Ahab Greybeard 2022-11-08 16:14:04 UTC 
I can confirm that this happens with the Nov 03 5.2.0-prealpha (git c64143d85e) appimage onwards.

I attach a screenshot, 'Crop Tool Outline Banding.png'
This does not happen if Canvas Graphics Acceleration is disabled.
It seems to be purely cosmetic.
Comment 2 Ahab Greybeard 2022-11-08 16:14:53 UTC 
Created attachment 153590 [details]
Crop Tool Outline Banding after moving
Comment 3 Deif Lou 2022-11-08 16:33:04 UTC 

*** This bug has been marked as a duplicate of bug 460577 ***