Coverflow is not updating Covers in random Mode

Hi

One of the main reasons why i bought the "Touch" was Coverflow.
But now i realized that it is not like in iTunes.

I select a Genre and start playing music in random mode......than i turn 90 degrees to
Coverflow and the actual cover is displayed.....ok.....but when the Track changes,
the cover does NOT change....like in iTunes.

This makes coverflow a little senseless specially in the car where i use my iPod's most!!

Is this a bug or are there any other reasons for this (miss)behaviour???

thx ia