I have created a document in Framemaker and printed it out to a PDF. When I check the PDF Output Preview to see if there is any color by turning off Process Black, I find an image that shows up as gray. If I then scroll to the bottom of my PDF and then come back to this image, it no longer shows up. I've had another person in the office check the file and the same thing happens. The image in question was created in Illustrator before being imported into Framemaker. All the colors were set to black.
Is this a bug in how the PDF is displaying the Output Preview? Or is there an issue with the image?