SingleVariableCostFunction in nn/part2

animation/transform.py

@@ -59,6 +59,7 @@ class Transform(Animation):
         Animation.clean_up(self, surrounding_scene)
         if self.replace_mobject_with_target_in_scene and surrounding_scene is not None:
             surrounding_scene.remove(self.mobject)
+            if not self.remover:
                 surrounding_scene.add(self.original_target_mobject)
 
 class ReplacementTransform(Transform):