5d mark ii top focus point

[cdang]

So I was out shooting last night when I pressed the AF button to light up all the points to help me see if everything is leveled before I took the shot. I noticed the top focus point had a faint illumination above the point. So I tried manually going through all the points to see if any of the other points had the same problem. In the end only the top point had this little faint 'reflection' above it. Anyone know what it is and if it's anything dramas or am just going coocoo. Thanks.