Bugfix: make sure last frame for animations with updaters is correct (#983)

* Fix last frame issue

* Add tests

* black

* black

Author: sparshg

manim/scene/scene.py

@@ -849,6 +849,8 @@ def play_internal(self, skip_rendering=False):
         for animation in self.animations:
             animation.finish()
             animation.clean_up_from_scene(self)
+        if not self.renderer.skip_animations:
+            self.update_mobjects(0)
         self.renderer.static_image = None
 
     def update_to_time(self, t):

tests/control_data/graphical_units_data/updaters/LastFrameWhenClearedTest.npz

@@ -33,6 +33,17 @@ def f(mob):
         self.play(ShowCreation(s))
 
 
+class LastFrameWhenClearedTest(Scene):
+    def construct(self):
+        dot = Dot()
+        square = Square()
+        square.add_updater(lambda m: m.move_to(dot, UL))
+        self.add(square)
+        self.play(dot.animate.shift(UP * 2), rate_func=linear)
+        square.clear_updaters()
+        self.wait()
+
+
 MODULE_NAME = "updaters"