Magic Sheet colors display wrongly?

Hi, 
Our magic sheet display colors based on “Color MSpeed”, “Color Mix” and/or “Color Macros” values. It appears to be in CP901 (red color, ch543) as long as one parameter is in CP901 even if CMY values are 0. Output is correctly no color. This only occur on my tech-table client – the desk is as normal. 
I suspect this to be a bug in later updates. Currently running 2.8.1.6 Anyone else have experienced this?

Thanks,

Torkel

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