I can't reproduce this issue on neither on my phone / tablet. Tested: chrome, firefox, and default android browser on both of them.

Might be a resolution issue. Your phone is more a tablet than anything else

Are you sure you didn't just have a timeout loading from static.jboss.org? From the attached screenshot, it looks like the page isn't fully loaded yet.

Nope, I just accidentally clicked a link at the moment I wanted to take the screenshot as well. The page is fully loaded and there is no image.