The 'problem' still exists, as you mentioned. It is very limited to a drum sequence pad, and only happens occasionally. But the pads are incredible and play exactly 'in time' with the style, no matter when engaged.
Embarrassed on stage by this minute glitch is never a problem for me, as I am in full command of my playing.
zuki it is a BIG problem on the PA units no matter how you want to look at it, ...
it is a BUG that needs to be corrected plain and simple, +1 for Yamaha on this feature....,in command?