Hi Nighthawk
I've found your bug for example in the Cool swing style, but I think it is related to the way of playing the chord because if you use only start/stop to start the style, the bass line is always the same, but using the SyncStart option it sometimes changes.
I imagine that playing a chord I press the three keys of the chord in different istants and the order can change the bass line...
this is a supposition, but also if you start the style with a one finger chord, you will have the same bass line...
what do you think about my idea?
regards,
Rival