Arc lines not located correctly, according to where the grips are located.

When I zoom in far enough to make sure that I successfully chose an egrip and connected the endpoint of an arc to another endpoint I find that the display of the line starts to veer off from the grip. If I open with AudoCAD or import the dxf file into programs capable of reading and displaying dxf files all of them show the line in it's correct position, correctly connected to the grip. See attached screenshot of what is happening. Is this a bug? Or is it related to a display setting?