diff --git a/cura/ConvexHullDecorator.py b/cura/ConvexHullDecorator.py
index d864f4288b..783d74e41b 100644
--- a/cura/ConvexHullDecorator.py
+++ b/cura/ConvexHullDecorator.py
@@ -30,9 +30,10 @@ class ConvexHullDecorator(SceneNodeDecorator):
 
     def setNode(self, node):
         previous_node = self._node
+        # Disconnect from previous node signals
         if previous_node is not None and node is not previous_node:
-            previous_node.transformationChanged.connect(self._onChanged)
-            previous_node.parentChanged.connect(self._onChanged)
+            previous_node.transformationChanged.disconnect(self._onChanged)
+            previous_node.parentChanged.disconnect(self._onChanged)
 
         super().setNode(node)
 
diff --git a/cura/PlatformPhysics.py b/cura/PlatformPhysics.py
index 91d2b1a1ef..56daaddc18 100644
--- a/cura/PlatformPhysics.py
+++ b/cura/PlatformPhysics.py
@@ -71,7 +71,6 @@ class PlatformPhysics:
             # If there is no convex hull for the node, start calculating it and continue.
             if not node.getDecorator(ConvexHullDecorator):
                 node.addDecorator(ConvexHullDecorator())
-            node.callDecoration("recomputeConvexHull")
 
             if Preferences.getInstance().getValue("physics/automatic_push_free"):
                 # Check for collisions between convex hulls