So after digging a little further this seems to be an issue with the mouse button being down/dragged.
I have two versions of the logic: (1) where you have to click and drag to make a change to the control, and (2) where as long as your mouse is over the widget then it will update according to mouse position, no click+drag required.
In the attached video, you can see that in (1) the rig only updates when I release the mouse, and in (2) the rig is constantly updating.
However, the functionality of (2) is not feasible, I need to be able to click drag to make the change otherwise it makes no sense.
Is there something going on when the mouse button is down to stop the rig from updating? That doesn’t really make sense because you can click and drag either the values in sequencer or the control rig face board in the actual scene and move of those update interactively.
Anyone help me?