Unexpected issue after upgrade ember-animated

My app uses embroider and I was trying to fix the Ember 3.28 deprecations by upgrading ember-animated to the latest version.

In my app we use it in the main route:

// application.hbs
```hbs

```

// navbar.hbs
```hbs

{{! our code }}

```


Start by reproducing the reported behavior after upgrading ember-animated in an app using Embroider and Ember 3.28, with the examples in application.hbs and navbar.hbs. Inspect the AnimatedContainer usage and the attached screenshot, then determine the expected behavior and confirm that the unexpected issue no longer occurs without breaking the Navbar.

Written by the indexing model from the issue text.