fix(multimonitor): Study browser more menu fixes (#5208)

platform/core/src/services/CustomizationService/CustomizationService.ts

@@ -131,7 +131,11 @@ export default class CustomizationService extends PubSubService {
       }
     });
 
-    this.addReferences(this.configuration);
+    // Only add references for the configuration once.
+    if (!this.configuration?._hasBeenAdded) {
+      this.addReferences(this.configuration);
+      Object.defineProperty(this.configuration, '_hasBeenAdded', { value: true, writable: false });
+    }
   }
 
   public onModeEnter(): void {