v-translate breaks v-model on select

It appears that using `v-model` on `select` inside `v-translate` block is causing troubles. 

Simple case to reproduce the problem : 

```
<div v-translate>
  <select v-model="selected">
    <option value="1">1</option>
   <option value="2">2</option>
  </select>
  <span>Selected value : {{ this.selected }} </span>
</div>
```

`this.selected` is always equal to the initial value