i18N: View path does not change if language folder exists

The directory structure:
~~~
views
|-- de-DE
| -- faq.php
-- faq.php
~~~
The source language is 'en-US' (unchanged). The current language is 'de-DE'. I expected that the views/de-DE/faq.php would be rendered. But it instead the original views/faq.php is rendered.