The attached file has an issue that I've come across with other similar pieces. This is a ductwork transition layout that's composed of offset cones added. All of the faces have been unfolded except one, which has an issue. If you zoom in to one edge of the face, there's a line that seems to show another facet, which shouldn't be there, and if you indicate to pick that face to unfold, the errant facet highlights with the major facet. If you do pick it, TC looks to go infinite loop, doesn't respond and has to be killed. The circumstances that cause this behaviour are if I try to unfold a conic that's had a boolean performed on it. The conic ends up with a longitudinal line down it (at least there's a warning indicator), and this fault exhibits. This is reproduceable, so it should be trackable and fixable. Go to it, support team.
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