That's not a bug; it's a result of the designed behaviour of the Colour panel. The Colour panel's eyedropper does not directly obtain the colour of an object in the document; it samples the colour of a pixel in the rendered composite of the document. In your example, a CMYK colour is sampled because your document is CMYK, regardless of the colour mode of an attribute (such as the fill colour) of some particular object in that document. Your Colour panel's mode is HSL with the lock enga