GrasshopperPlayer preview doesn't disappear after command

Hi there,
I was experimenting a little with Grasshopper Player. I don’t know how exactly explain it. After using the Player the preview of the Grasshopper elements don’t disappear even after closing Grasshopper or turning off all Grasshopper previews.
There is either no GrasshopperPlayer command active.

Is there a way to kind of refresh? Kill the process?