Polygon.Intersects() method not working for some inputs?

[Sreekanth Sivasankaran]

Not sure why the below polygon intersect unit test isn't working?
The actual polygons aren't overlapping on the earth's surface but S2 says it does.

Does anyone have any idea/clues as to why this isn't working?

func TestPolygonIntersectsNotWorking(t *testing.T) {
	pts := make([]Point, 7)
	pts[0] = PointFromLatLng(LatLngFromDegrees(13.197164523281993, -282.9803466796875))
	pts[1] = PointFromLatLng(LatLngFromDegrees(12.404388944669792, -282.919921875))
	pts[2] = PointFromLatLng(LatLngFromDegrees(12.833226023521243, -282.1728515625))
	pts[3] = PointFromLatLng(LatLngFromDegrees(12.95102921601837, -281.55761718749994))

	pts[4] = PointFromLatLng(LatLngFromDegrees(13.443052132777558, -281.62353515625))
	pts[5] = PointFromLatLng(LatLngFromDegrees(13.678013256725489, -282.19482421875))
	pts[6] = PointFromLatLng(LatLngFromDegrees(13.720708401412068, -282.777099609375))

	polygon1 := PolygonFromLoops([]*Loop{
		LoopFromPoints(pts),
	})

	pts = make([]Point, 19)

	pts[0] = PointFromLatLng(LatLngFromDegrees(45.13745, -67.13734))
	pts[1] = PointFromLatLng(LatLngFromDegrees(44.8097, -66.96466))
	pts[2] = PointFromLatLng(LatLngFromDegrees(44.3252, -68.03252))
	pts[3] = PointFromLatLng(LatLngFromDegrees(43.98, -69.06))

	pts[4] = PointFromLatLng(LatLngFromDegrees(43.68405, -70.11617))
	pts[5] = PointFromLatLng(LatLngFromDegrees(43.09008, -70.64573))
	pts[6] = PointFromLatLng(LatLngFromDegrees(43.08003, -70.75102))
	pts[7] = PointFromLatLng(LatLngFromDegrees(43.21973, -70.79761))

	pts[8] = PointFromLatLng(LatLngFromDegrees(43.36789, -70.98176))
	pts[9] = PointFromLatLng(LatLngFromDegrees(43.46633, -70.94416))
	pts[10] = PointFromLatLng(LatLngFromDegrees(45.30524, -71.08482))
	pts[11] = PointFromLatLng(LatLngFromDegrees(45.46022, -70.66002))

	pts[12] = PointFromLatLng(LatLngFromDegrees(45.91479, -70.30495))
	pts[13] = PointFromLatLng(LatLngFromDegrees(46.69317, -70.00014))
	pts[14] = PointFromLatLng(LatLngFromDegrees(47.44777, -69.23708))
	pts[15] = PointFromLatLng(LatLngFromDegrees(47.18479, -68.90478))

	pts[16] = PointFromLatLng(LatLngFromDegrees(47.35462, -68.2343))
	pts[17] = PointFromLatLng(LatLngFromDegrees(47.06624, -67.79035))
	pts[18] = PointFromLatLng(LatLngFromDegrees(45.70258, -67.79035))

	polygon2 := PolygonFromLoops([]*Loop{
		LoopFromPoints(pts),
	})

	if polygon2.Intersects(polygon1) {
		t.Errorf("polygons should not intersect")
	}

	if polygon2.Contains(polygon1) {
		t.Errorf("polygon2 should not contain polygon1")
	}
}

[Sreekanth Sivasankaran]

Closing this ticket as the issue was wrt the wrong ordering of the edges in the second polygon and that was resulting in an enclosure for the whole sphere.