30 deg inward move on last perimeter problem (0.9.4 onward)

I'm getting some inconsistency in how this experimental feature behaves. On a hollow cylinder, the exterior perimeters on the outside of the cylinder move inward, as expected, but at the end of the exterior perimeters on the inside of the cylinder, the movement is 30 degrees away from the wall. So I get a larger than usual blob on the inside of the cylinder, while the outside looks quite nice. I've attached an STL of the hollow cylinder I'm using. Anybody else having this type of issue? Is there a way to disable this feature without reverting to an old version?