Yes, that's the cause! The line disappears when I select Dark Grey. I also looked at a bunch of other PDFs from a variety of sources, and the same thing happens there. It's definitely one of those weird psycho/perceptual phenomena. I never noticed it before in PDFs I was reading, but now that I'm sensitized to it, my eye is drawn to it every time. It does seem a very odd feature. Can't imagine that not having a white line in Light Gray mode would negatively affect anything. Thanks so much for your help! ... View more

That's so bizarre! I've attached a link to a screenshot of how it looks on my monitors (laptop and attached monitor). I also had a couple colleagues view it, and it looks the same on their screens as it does on mine: a thin white line visible around the blue. We're all using Windows 10. Haven't been able to test it with anyone yet who has a Mac. I don't have the Show art, trim etc. option selected. I toggled it a few times and checked each time to see if it would affect anything, but no change. https://drive.google.com/open?id=1sHSb2XYOjkIMXPwHE0-7pkyzHE0p9YHb [Mod: File attached for convenience of others following this thread!] ... View more

Thanks for the response! Here's a link to a simple Word doc and the corresponding pdf that shows the issue: Adobe forum - Google Drive On the first page of the Word doc, the graphic goes right to the edges. On the second page, the graphic overlaps a bit the long edge. However, the pdf of each looks the same. Stephen ... View more