Sometimes loading a patch it will have two images of the slider although only one position is correct. Clicking the control will remove the ghost slider. Going to a different page of the synth (Attributes or Browser) will also clear the ghost.
This is not a new thing, it's been around for a decade or longer. Thought I might report it anyway, since Massive is still the most used software out of all of Komplete for me, and it bugs me every time.