CMYK decompositions all black
GIMP version: 2.10.14
Operating System: macOS
Package: gimp.org
Description of the bug
Colors -> Components -> Decompose CMYK yields an all-black image.
Reproduction
Is the bug reproducible? Always
Reproduction steps:
- Load an image e.g. cmyk-test.jpg
- Colors -> Components -> Decompose...
- Select Color model: CMYK, click OK
…
Expected result: an image with layers for CMYK
Actual result: four entirely black layers
Additional information
Decompose works for RGB, HSV, etc, but not CMYK. I tried multiple images and always got all-black with CMYK. Unchecking "decompose to layers" yields four black images.