Hi Stian,

Op 13-3-2019 om 18:14 schreef Stian Zeljko Vrba via Boost-users:

Hi,

as I suspected, your example is highly degenerate; sides are almost overlapping and are ALMOST parallel but not quite; see the screenshot.

Indeed the lines were nearly collinear. Anyway, it is fixed in 1.70, see ticket

Regards, Barend