It seems it doesn't work at all, especially when knob is fully on and then attenuverter to fully CCW has been applied. However I clearly hear changes when turn the big control knob itself. Thus seems CV input doesn't make sense yet.
I can't reproduce that problem here. How is your patch set up? edit : OK, seems it happens when polyphony is activated, only one voice is modulated if the modulation signal is not polyphonic.
It seems it doesn't work at all, especially when knob is fully on and then attenuverter to fully CCW has been applied. However I clearly hear changes when turn the big control knob itself. Thus seems CV input doesn't make sense yet.