I have this issue with just the Saturation Knob, only in Console View, only on the second monitor, and only if it set / mounted above the main monitor (which is where I have it).
It seems like a display error (in SONAR), as I have had this both in X3e and SPlat (every release), with two different pc's (different graphic cards), both with the latest drivers and updates. Even had a TeamViewer session with one of the nice people from Cakewalk, and they could not figure it out.
Everything is working as it should, on my main monitor.
I tweak the Saturation Knob in Track View, Inspector (I), Pro Channel.