12-02-2019, 08:50 AM
There is a bug report about this: https://gitlab.gnome.org/GNOME/gimp/issues/3405 AFAIK not liable to be fixed soon.
Alternatives:
Triplicate into three layers and apply Colors -> Components -> Extract Component (GEGL) for each of C, M , Y in turn. Key is still broken and returns a black layer.
Steal the two plugins compose / decompose from a Gimp 2.8 installation for use in Gimp 2.10.
Alternatives:
Triplicate into three layers and apply Colors -> Components -> Extract Component (GEGL) for each of C, M , Y in turn. Key is still broken and returns a black layer.
Steal the two plugins compose / decompose from a Gimp 2.8 installation for use in Gimp 2.10.