I had heard about this issue before my track day in Portland last week. So in anticipation, I removed a bit power steering fluid (with a syringe) so that the level was mid-way. It was initially at the top most marker. I had no issue at the track.
2009 E90 M3 | SG | FR | 6Speed | Akrapovic Evo | JRZ RS1 | StopTech Trophy | Cantrell Brake Ducts