I was really bored, so I thought I'd make a visual. Basically, the sticky navigation bar (as I'm sure you're aware) does some weird things. At first, when it touches, you get that odd symbol with 3 sliders on it. I don't know what that's supposed to do; it redirects you to the homepage. If you scroll down a bit more, the "Mark Forums Read" line disappears, but it looks like it's not supposed to. Maybe it's intentional, to make the navigation bar not take up too much of the screen. But it looks like it's just being overlapped my the main body. I thought I'd just point those out. If they're all intentional, then making this image this was still a good way to kill time! It probably looks a bit confusing, but if you stare at it for a while, it'll all make sense.