Getting to the way it's supposed to be!

modules/ufbx/data/synthetic_face_groups_0_obj.obj

@@ -0,0 +1,24 @@
+v -1 -1 -1
+v +1 -1 -1
+v -1 +1 -1
+v +1 +1 -1
+v -1 -1 +1
+v +1 -1 +1
+v -1 +1 +1
+v +1 +1 +1
+
+usemtl A
+o Cube
+f 3 4 8 7
+g Front
+f 1 2 4 3
+g Sides
+f 1 3 7 5
+usemtl B
+g Back
+f 5 6 8 7
+g Sides
+f 2 4 8 6
+g 
+f 1 2 6 5
+