I would like to report here a bug I was hanging out when I started using a 6-color printer where I have two colors as a spot color (Fluo Yellou and Fluo Pink). I then combine them with CMYK colors.
If I give spot color through Illustrator over CMYK with multiplying settings,
I see the result black. When I turn off the GPU, I draw the result correctly. More in the pictures below.
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GPU Performance has been responsible for viewing problems for a number of users. If turning it off solves the problem by all means keep it off.
thanks for the reply. That's a problem I know, so here's what I'm writing to go ahead and fix it for someone from Adobe in the next releases. I'm just wondering if the bug is only for AMD cards or Nvidia. Can anyone try it out?
Test File here: Illustrator-GPU_preview_Spot-test.ai
It has already happened, and even one gentleman from Adobe has made a meeting to explore the problem. Now I'm just waiting to see if they find and fix the bug.