[Решено] I see versions of those URLs with /es/

Hi there! We have a variety of custom post types and are using WPML to translate some of them. Since recently though, we have been noticing that Spanish URLs exist for posts that never have been translated. The post type is set to "Not translatable" and always has been. Yet, I see versions of those URLs with /es/. I can not find those posts in WordPress. Is this a bug?