WPML – Translated Posts Accessible Through Original Language Category

Overview of the issue

When using the permalink structure /%category%/%postname%/, translated posts are accessible through the category slug of the original language.

For example, this is expected:

http://www.domain.com/english-books/hello-world-en/

http://www.domain.com/es/spanish-books/hello-world-es/

However, you shouldn’t be able to access to:

http://www.domain.com/es/english-books/hello-world-es/

We don’t have an available workaround, but our developers are already aware of this issue.