diff --git a/src/modules/editor/initalize.ts b/src/modules/editor/initalize.ts
index 83cfdf0..677671a 100644
--- a/src/modules/editor/initalize.ts
+++ b/src/modules/editor/initalize.ts
@@ -19,6 +19,7 @@ export function registerEditorInstanceHook() {
       },
     },
   );
+  Zotero.Notes._editorInstances.forEach(onEditorInstanceCreated);
 }
 
 async function onEditorInstanceCreated(editor: Zotero.EditorInstance) {
diff --git a/src/modules/editor/menu.ts b/src/modules/editor/menu.ts
index 0cc95f5..47b3fc6 100644
--- a/src/modules/editor/menu.ts
+++ b/src/modules/editor/menu.ts
@@ -10,10 +10,10 @@ export function initEditorMenu(editor: Zotero.EditorInstance) {
   const makeId = (key: string) =>
     `${config.addonRef}-editor-menu-${editor.instanceID}-${key}`;
   // Prevent duplicate menu items
-  if (editor._popup.getAttribute("bn-init") === "true") {
+  if (editor._popup.getAttribute("bn-init") === addon.data.uid) {
     return;
   }
-  editor._popup.setAttribute("bn-init", "true");
+  editor._popup.setAttribute("bn-init", addon.data.uid);
   (editor._popup as XUL.Menu).addEventListener("popupshowing", (ev) => {
     const menuitemID = makeId("resizeImage");
     if (