Additional Audio: The volume is not controllable R14b4

When I try to adjust the audio volume with keys and rubberband its not synchronized. R14b4 is starting much earlier to encrease or decrease the volume and sometimes the volume makes some jumps. Its only on additional audio clips, not with the original audio which comes with the clip.
Thats a heavy bug, because you dont have the control over the volume. Anyone noticed the problem too?
Benn

Same problem here, Davinci 14b5 (14.0.0b.043).