Sometimes it seems like the little bars for health are compressed to one side...
I don't know whether this was intended, but it seems like they should be uniform. Also, they don't compress to one side in a uniform fashion, either. Sometimes they're all on the right, sometimes the left...why is that?
EDIT: Mystery Solved! Or rather, idiot informed...
They "highlight" the part of your bar that you're actively using. When at full health, the right-most part of your bar is "expanded" and as you take damage, the zoom centers and moves to the left. It isn't random at all.