Stop automatically changing RGB files to grayscale when working with colors
Illustrator takes an RGB file and converts it to grayscale when changing the color of paths. For example- in an RGB file I change a path to red. Illustrator turns the path gray and converts the file to grayscale. I then have to convert the file back to RGB in order for the path to show as red.
Please get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html . Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.