Problem with WP core sitemap

Now that the sitemap feature has been added to wordpress, several xml files are generated.

Unfortunately, my sitemap in german, french, spanish redirect to the sitemap in english

To check this problem, go do youdomain.com/wp-sitemap.xml

Click on a sitemap in a different language like

/de/wp-sitemap-posts-post-1.xml

It will redirect to

/wp-sitemap-posts-post-1.xml

Maybe this problem is related to my installation. Let me know if you face the same problem.