Edit according to @vicdoval advice.

d092e637 · Ilya Portnov · a7c3c9cd · d092e637
--- a/nodes/solid/polygon_face.py
+++ b/nodes/solid/polygon_face.py
@@ -53,11 +53,12 @@ class SvSolidPolygonFaceNode(bpy.types.Node, SverchCustomTreeNode):
        tolerance = 10 ** (-self.accuracy)

        result = []
+        fc_vector = Base.Vector
        for face_i in face_idxs:
            face_i = list(face_i)
            face_i.append(face_i[0])
            fc_verts = [verts[idx] for idx in face_i]
-            fc_verts = [Base.Vector(*vert) for vert in fc_verts]
+            fc_verts = [fc_vector(*vert) for vert in fc_verts]
            wire = Part.makePolygon(fc_verts)
            wire.fixTolerance(tolerance)
            face = Part.Face(wire)