Hey, finally someone reported this. I've noticed this bug since I joined, which was a looong time ago. Thing is, it doesn't happens very often.
I've only noticed this bug in one song, and that's DragonForce - Through the Fire and Flames [Easy]. Though it ALWAYS happens for me.
Screenie:
[attachment=0:d98d2]screenshot171.png[/attachment:d98d2]