fix (error): Uncaught Error: undefined node for selector '[data-bind=…

…backend-enabled]'

public/assets/pages/adminpage/decorator_admin_only.js

@@ -7,6 +7,7 @@ import { isAdmin$ } from "./model_admin_session.js";
 export default function AdminOnly(ctrlWrapped) {
     return (render) => {
         effect(isAdmin$().pipe(
+            rxjs.distinctUntilChanged(),
             rxjs.map((isAdmin) => isAdmin ? ctrlWrapped : ctrlLogin),
             rxjs.tap((ctrl) => ctrl(render)),
             rxjs.catchError(ctrlError(render)),