CMC AI Controller not working on new sampler track controls

As the topic says, I own a CMC-AI. Whenever I hover the mouse over a control in plug.ind or the mixer, I can change the value via the AI Knob, with the exception of the Sampler control pane in Cubase 9. Here I can change values with the mouse wheel but not with the AI knob.
The AI knob sometimes works in the sampler pane when I use the mousewheel once while hovering over the control. After changing the value with the mousewheel I may also use the AI knob, but then, whats the point?