Vista 64 Audio Mixer corrupt?

[Shadows1990]

Looking at my Vista Audio Mixer, I can see that it isn't displaying properly.
The audio bar does not change on the WMP one (where the sound is coming from)
Anybody else had this problem, and found a fix?

 

[Shadows1990]

No-one? This bug is really annoying me, would be great to find a fix for it.

 

[pxmm]

Mine does the same thing. If there's enough apps open and the scrollbar is there I can move it to the right and then back again, which fixes the problem.

 

[Shadows1990]

Yeah, I've tried that and it works.
It also works if you move the volume control up or down.

Still, I would like a permanent fix