diff --git a/manimlib/mobject/types/vectorized_mobject.py b/manimlib/mobject/types/vectorized_mobject.py
index 7bb0d026..a63a190b 100644
--- a/manimlib/mobject/types/vectorized_mobject.py
+++ b/manimlib/mobject/types/vectorized_mobject.py
@@ -887,7 +887,7 @@ class VMobject(Mobject):
     def triggers_refreshed_triangulation(func):
         @wraps(func)
         def wrapper(self, *args, **kwargs):
-            old_points = self.get_points()
+            old_points = self.get_points().copy()
             func(self, *args, **kwargs)
             if not np.all(self.get_points() == old_points):
                 self.refresh_unit_normal()