not sure where this fits best, but I was wondering if there had been any issues with any of the weekly selections and the 100% issue?   I had seen some of the posts, but hadn't experienced any problems myself.   I suppose it may be since I normally just play bass.  Tonite I tried some rhythm and the first two songs gave me 100% with 30% accuracy.   or is this just in learn a song and not song attack?

As you pointed out you've got 30% accuraccy, so there is no problem here. The bug affects only Mastery, which is of no interest to us.