Difficult to reproduce, due to the limit on using the track-advance button in Pandora.

Clicking several times on the track-advance button resulted in it working about 4/5 times, but about the 3rd click the player stopped playing, and just displayed the title of the next track with '00:00' in the upper right corner of my squeezebox.  I didn't try hitting 'play' (next time I will) but hitting track-advance one more time moved on to the next track, which began playing immediately (correct behavior).