Getting to the way it's supposed to be!

modules/ufbx/data/blender_293x_nonmanifold_subsurf.obj

@@ -0,0 +1,71 @@
+# ufbx:line_faces
+# Blender v2.93.1 OBJ File: ''
+# www.blender.org
+g Plane
+v -0.750000 0.000000 0.875000
+v 0.750000 0.000000 0.875000
+v -0.750000 0.000000 -0.875000
+v 0.750000 0.000000 -0.875000
+v -1.000000 0.000000 0.000000
+v 1.000000 0.000000 0.000000
+v -0.750000 0.875000 0.000000
+v 0.750000 0.875000 0.000000
+v 1.000000 -1.000000 0.000000
+v -1.000000 0.000000 0.500000
+v 0.000000 0.000000 1.000000
+v 1.000000 0.000000 -0.500000
+v 0.000000 0.000000 -1.000000
+v -1.000000 0.000000 -0.500000
+v 1.000000 0.000000 0.500000
+v 0.000000 0.000000 0.000000
+v 0.000000 1.000000 0.000000
+v 1.000000 0.500000 0.000000
+v -1.000000 0.500000 0.000000
+v 1.000000 -0.500000 0.000000
+v 0.000000 0.000000 -0.500000
+v 0.000000 0.000000 0.500000
+v 0.000000 0.500000 0.000000
+vt 0.666243 0.666525
+vt 0.333192 0.666525
+vt 0.333192 0.500000
+vt 0.666243 0.500000
+vt 0.000141 0.666525
+vt 0.000141 0.500000
+vt 0.000141 0.333475
+vt 0.333192 0.333475
+vt 0.666243 0.333475
+vt 0.666243 0.333192
+vt 0.333192 0.333192
+vt 0.333192 0.166667
+vt 0.666243 0.166667
+vt 0.000141 0.333192
+vt 0.000141 0.166667
+vt 0.000141 0.000141
+vt 0.333192 0.000141
+vt 0.666243 0.000141
+vt 0.666243 0.999859
+vt 0.333192 0.999859
+vt 0.333192 0.833333
+vt 0.666243 0.833333
+vt 0.000141 0.999859
+vt 0.000141 0.833333
+vt 0.000141 0.666808
+vt 0.333192 0.666808
+vt 0.666243 0.666808
+vn 0.0000 1.0000 0.0000
+vn 0.0000 0.0000 1.0000
+s off
+f 5/1/1 16/2/1 21/3/1 14/4/1
+f 16/2/1 6/5/1 12/6/1 21/3/1
+f 21/3/1 12/6/1 4/7/1 13/8/1
+f 14/4/1 21/3/1 13/8/1 3/9/1
+f 1/10/1 11/11/1 22/12/1 10/13/1
+f 11/11/1 2/14/1 15/15/1 22/12/1
+f 22/12/1 15/15/1 6/16/1 16/17/1
+f 10/13/1 22/12/1 16/17/1 5/18/1
+f 5/19/2 16/20/2 23/21/2 19/22/2
+f 16/20/2 6/23/2 18/24/2 23/21/2
+f 23/21/2 18/24/2 8/25/2 17/26/2
+f 19/22/2 23/21/2 17/26/2 7/27/2
+l 6 20
+l 20 9