I turned off the history for xfce4-cpugraph, but it is still visible, see attached image
Created attachment 185048 [details] shot1.png
It works for me. I can't tell the problem from your screenshot there.
(In reply to comment #2) > It works for me. I can't tell the problem from your screenshot there. > Sorry, still don't understand. I guess I will close this as NEEDSINFO.