False "unused selector" for SCSS Extend

```vue
<template>
  <h1 class="eng-title">hello</h1>
</template>

<style scoped lang="scss">
%title {
  font-size: 2rem;
}

.eng-title {
  @extend %title;
}
</style>
```

I get: ```The selector `%title` is unused.```