Most of the time when I open a hierarchical class browser the focal class 
is invisible, since it is below the very tiny scroll area that is 
shown.  This seems a bit odd, since that class is highlighted (when 
scrolled into view, and it is controlling what you see in the other windows 
anyway).

I see this both on MS Windows and Linux, though I wonder if it's a font 
thing and it looks OK on, e.g., a Mac.