Until recently, the G'MIC Artistic - Photoillustration filter at default settings gave me a result with normal colors.
Now I get a CMYK image with no C and no K! Just yellow and magenta.
This is true for both 1.5.7.2 and 1.5.8.0 G'MIC and in GIMP 2.8.2 and samj's 2.8.10. Also true for some other filters including Artistic - Watercolor. I waited for a few weeks thinking this was a bug that would be corrected soon and kept updating my filters with optimism, but nobody else seems to have this problem. Could this be related to multi-thread processing?
I am on Windows 7 using 64-bit builds. Working in RGB color with no color management. Nothing outside G'MIC is broken. Any ideas? Thanks.