Extraction of Strings in included Twig-Templates not working

Hello folks,

currently, strings lying in other twig templates don't get extracted. Maybe it also has something to do with that my template is a Single Directory Component → ?

<div class="some-class">
  {{ include('my_theme_name:pricing-table', {
    currentSubscription: subscription
  }, with_context = false) }}
</div>

Is it a bug or not implemented, yet?

Thanks for any clearification ;)

Bye