Rebuild reverses curve's end tangent direction

Here are a couple of curves that _Rebuild reverses one end’s tangent direction when Preserve end tangent directions is enabled.

RebuildRevsTanDir.3dm (28.0 KB)

This occurs in V6, V7, and with RhinoCommon’s Curve.Rebuild method with preserveTangents=True.

Hi Steve - I see that, thanks.
RH-61531 Rebuild - tangent direction flipped