Yes, was a bit confused when I opened the image on my ancient work computer (Windows, old Dell monitor) and could see the logo clearly. Interestingly, Chrome refused to display the image despite it nominally being a PNG, and I had to open it via an external program. Dragging the window to my second monitor (different model) causes the logo to vanish (though I do feel like I see it for a split second on the second monitor... optical illusion?).
Chrome should be able to display it fine. The dl=1 param on the Dropbox URL means the request is served with a response header indicating it's a download. Change the link to dl=0 and it won't force the download.
By the way, anyone who can display it (all my nice monitors aren't with me at the moment) can you see it on this imgur link? http://i.imgur.com/qCna54M.png
imgur shows straight red on my 2015 Macbook Pro, but my iPhone 7 shows the logo.
The dropbox thumbnail link (with ?dl=0) shows the logo. Opening the link with ?dl=1 in Preview shows straight red. I think Dropbox is doing some weird thumbnail processing.
You are probably seeing the color management of monitor 1 in effect on monitor 2 while the window is less than halfway. Once it goes above half then monitor 2's color management takes over fully and it disappears.
