Curves and Level tool not working on specific image
GIMP version: 2.10.22
Operating System: Linux Mint 20
Package: Installer from gimp.org?
Description of the bug
The Curves tool, as well as the Level tool, does nothing on the attached image. Copy-pasting the image, converting it to jpeg, none work. However, blurring it solves the problem; so I assume it has to do with the pixels levels.
I got this image by using the Posterize tool on an album cover.
Reproduction
Is the bug reproducible? Always for me!
Reproduction steps:
- Open the attached image with gimp.
- Use the Colors > Curve tool and mess the curve around.
- Save.
…
Expected result: The tool's preview changes the image's render
Actual result: No previewing occurs. Save, nothing occurs.
Edited by Christophe Carpentier