GarageBand '11 (6.0.4) graphic issues

[MacRum2011]

anyone having graphic issues with GarageBand since Lion upgrade/install.

Its a bit hard to explain it.

When you scroll downwards the top half goes out of focus on the left of the tracks above Piano Roll/Score section.

When you scroll up it just goes bizarre/crazy.

[FreeMClick]

I noticed the thread was written Jul 29, 2011, 12:07 AM. Did you ever find answers to this issue. I got a 21.5-inch, Mid 2011 (brand new) in December 2011, and im having the exact same problem. I really don't want to take this to an apple store. So if you resolved this problem, please let me know.

Thanks