diff --git a/src/worldshaperStudio/runtime.ts b/src/worldshaperStudio/runtime.ts
index 8b2579b..74c6eb7 100644
--- a/src/worldshaperStudio/runtime.ts
+++ b/src/worldshaperStudio/runtime.ts
@@ -1212,13 +1212,7 @@ export function startWorldshaperStudio(bootstrap: WorldshaperStudioBootstrap, in
       runtimeUniqueId,
     });
     const { appendEditorLogEntry, getEditorLogEntries, clearEditorLogEntries } = runtimeLogging;
-    let historyController = null;
-    let npcController = null;
-    let sidebarController = null;
     let renderController = null;
-    let persistenceController = null;
-    let importController = null;
-    let interactionController = null;
     const documentController = createMapDocumentController({
       mapId: currentMapId,
       getMapId: () => currentMapId,
@@ -4756,13 +4750,7 @@ export function startWorldshaperStudio(bootstrap: WorldshaperStudioBootstrap, in
       syncWorldNeighborhoodForViewport,
       drawNow,
     });
-    historyController = runtimeControllerBootstrap.historyController;
-    npcController = runtimeControllerBootstrap.npcController;
-    sidebarController = runtimeControllerBootstrap.sidebarController;
     renderController = runtimeControllerBootstrap.renderController;
-    persistenceController = runtimeControllerBootstrap.persistenceController;
-    importController = runtimeControllerBootstrap.importController;
-    interactionController = runtimeControllerBootstrap.interactionController;
     statusLogWindowController = runtimeControllerBootstrap.statusLogWindowController;
     runtimeLogging.setStatusLogWindowController(statusLogWindowController);
 }
diff --git a/src/worldshaperStudio/runtimeControllerBootstrap.ts b/src/worldshaperStudio/runtimeControllerBootstrap.ts
index 465c53c..9149b45 100644
--- a/src/worldshaperStudio/runtimeControllerBootstrap.ts
+++ b/src/worldshaperStudio/runtimeControllerBootstrap.ts
@@ -143,12 +143,12 @@ export function initializeRuntimeControllers(config) {
   uiScope.reloadGraphicsContentFromApi = reloadGraphicsContentFromApi;
 
   syncDocumentTitle();
-  const historyController = createHistoryController(scope);
-  const npcController = createNpcController(scope);
-  const sidebarController = createSidebarController(scope);
+  createHistoryController(scope);
+  createNpcController(scope);
+  createSidebarController(scope);
   const renderController = createRenderController(scope);
-  const persistenceController = createPersistenceController(scope);
-  const importController = createImportController(scope);
+  createPersistenceController(scope);
+  createImportController(scope);
   const interactionController = createInteractionController(scope);
 
   const persistPopupBoundsDeferred = createDebouncedCallback(() => {
@@ -193,13 +193,7 @@ export function initializeRuntimeControllers(config) {
   });
 
   return {
-    historyController,
-    npcController,
-    sidebarController,
     renderController,
-    persistenceController,
-    importController,
-    interactionController,
     statusLogWindowController,
     changelogSplashWindowController,
     persistPopupBoundsDeferred,