Deliberately difficult gamut colors in macro shot of hex nut

@RawConvert: I haven’t understood the discussion at github about this issue, I think because I don’t understand the history and changes to modules. color balance 1 is not in the pixel pipe at step 25 and color correction uses no raster mask:

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At step 26:

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How does color correction get affected when it doesn’t even show up as being accessed at the the top of the history? And is the gist of the discussion on github that because the polarity of the raster mask is toggled in color correction, it reverses the effect of the parametric mask in color balance 1?