fix(creation): honor suspend_mobject_updating in Create/Uncreate

manim/animation/creation.py

@@ -123,6 +123,15 @@ def __init__(
             raise TypeError(f"{self.__class__.__name__} only works for VMobjects.")
         super().__init__(mobject, **kwargs)
 
+    def begin(self) -> None:
+        super().begin()
+        # Each frame is rebuilt from starting_mobject via pointwise_become_partial,
+        # so its updaters must also be suspended; otherwise they keep mutating the
+        # reference copy and leak back into the result, ignoring
+        # suspend_mobject_updating (#4763).
+        if self.suspend_mobject_updating and self.starting_mobject is not None:
+            self.starting_mobject.suspend_updating()
+
     def interpolate_submobject(
         self,
         submobject: Mobject,

tests/module/animation/test_creation.py

@@ -3,7 +3,7 @@
 import numpy as np
 import pytest
 
-from manim import AddTextLetterByLetter, Text
+from manim import RIGHT, AddTextLetterByLetter, Circle, Create, Text
 
 
 def test_non_empty_text_creation():
@@ -32,3 +32,13 @@ def test_run_time_for_non_empty_text(config):
     expected_run_time = np.max((1 / config.frame_rate, run_time_per_char)) * len(s.text)
     anim = AddTextLetterByLetter(s, time_per_char=run_time_per_char)
     assert anim.run_time == expected_run_time
+
+
+def test_create_suspends_starting_mobject_updaters() -> None:
+    """Create rebuilds from starting_mobject each frame; its updaters must pause too (#4763)."""
+    circle = Circle()
+    circle.add_updater(lambda m, dt: m.shift(RIGHT * dt))
+    anim = Create(circle, suspend_mobject_updating=True)
+    anim.begin()
+    assert anim.starting_mobject is not None
+    assert anim.starting_mobject.updating_suspended

tests/test_graphical_units/test_updaters.py

@@ -31,7 +31,7 @@ def f(mob):
         scene.add(Square())
 
     s = Circle().add_updater(f)
-    scene.play(Create(s))
+    scene.play(GrowFromCenter(s))
 
 
 @frames_comparison(last_frame=False)