AutoCAD Inventor :: Chamfer To A Curved Edge

In Autodesk Inventor 2013. I have a simple cylinder extrusion with a rectangle attached to the cylinder. Drawing file attached(extrusion 1). Whenever I apply a chamfer to one of the straight edges, Inventor generates negative taper on the cylinder wall (if you zoom in with a window, you can clearly see that their are two lines on the cylinder wall where the chamfer edges was applied).

Is there anyway to prevent this from happening? This gives me all sorts of problem in my CAM software because the tool is trying to machine in an area it cannot get to.

As a work around I have to create a new part file with a small gap between the cylinder and the chamfered edges. This keeps the cylinder edges nice and straight with no taper. The work around is attached as well. Since the tool can't go that far into the corner given the radius of the tool, the gap has no affect on me generating code. I have tried many different ways on creating this part with chamfers with no luck. Once the chamfer is generated, it should match the profile of the cylinder.