Why can't I pull down the side bar during auto scroll?

I have managed to import the full 25 minutes of Mike Oldfield Tubular Bells into my Cubase. When I select all the MIDI tracks and run through the project in Score, after I’ve clicked on auto scroll, the program doesnt seem to let me pull down the side bar of the score window so I can view the other tracks during playback. It just seems to constantly bring me back up to the top 5 MIDI tracks during playback.
Is there any way I can scroll down during auto scroll during playback so I can view the other track’s scores?
Regards,
Richard Steed