paper-chips inside paper-form: form is sent and closed when adding new tag (press Enter)

`ember-paper` version `1.0.0-beta.35`.

When use `chips` inside a `form`:
```

...

```

After entering new tag and pressing `Enter` button, form is sent and closed.

It is expected behavior for other components, e.g. `input`, but for `chips` I expect that new tag is added and form is not closed.

As a simple workaround I wrapped `chips` into `div`:
```

Is there better solution to solve this issue?