After the graph is first displayed, toggling the S_how parameters_ using the radio button the arrows do not refresh, and if the length of the parameters text exceeds the original width of the box, then the arrows end up misplaced. see before and after toggling 

Attached are the screenshots for before and after toggling the show parameters.

Also, if you zoom in or out the browser page the arrows do not update and stay in the same place and the same size as they were created.