diff --git a/src/runtime-three/editor-simulation-controller.ts b/src/runtime-three/editor-simulation-controller.ts
index 0a02e6da..b096edca 100644
--- a/src/runtime-three/editor-simulation-controller.ts
+++ b/src/runtime-three/editor-simulation-controller.ts
@@ -354,9 +354,13 @@ export class EditorSimulationController {
     }
 
     try {
-      this.runtimeScheduleSyncContext ??= createRuntimeScheduleSyncContext(
-        this.runtimeScene
-      );
+      if (
+        this.runtimeScheduleSyncContext?.runtimeScene !== this.runtimeScene
+      ) {
+        this.runtimeScheduleSyncContext = createRuntimeScheduleSyncContext(
+          this.runtimeScene
+        );
+      }
       syncRuntimeSceneToClock(
         this.runtimeScene,
         this.currentClock,