vnode-unmounted Not Declared

[andrew-svirin]

In FF v 6.6.3

In Chrome v 7.7.6

I face this message when using vue-router version 4.x

\\App.vue
<template>
  <router-view />
</template>
<script>
export default {
  name: 'App',
};
</script>

\\SignIn.vue
<template>
  Sign-in
</template>
<script>
export default {
  name: 'SignIn',
};
</script>

\\ router.js
import {createRouter, createWebHistory} from 'vue-router';

import SignIn from '@/General/views/SignIn.vue';

export default createRouter({
  history: createWebHistory(),
  routes: [
    {path: '/sign-in', component: SignIn},
  ]
});

\\ app.js
import {createApp} from 'vue';
import App from '@/General/App.vue';
import router from '@/General/plugins/router';

const app = createApp(App);

app.config.devtools = true; // Enable Vue DevTools

app.
  .use(router);

app.mount('#app-container');

Also I often facing freezes on vue devtool (for firefox), for Chrome it so slowing page that it impossible to use it.