This seems to be a bug in OpenSubdiv. For now simply use Catmark subdivision scheme with infinitely sharp edges. Later on it's either gets fixed in OpenSubdiv or we do bilinear subdivision on our side.
This seems to be a bug in OpenSubdiv. For now simply use Catmark subdivision scheme with infinitely sharp edges. Later on it's either gets fixed in OpenSubdiv or we do bilinear subdivision on our side.