I'm using the Rainlab Language Plugin with english and german.
In the english (default) portfolio-list the link to the details page are correct, in german it doesn't add the slug to the URL.
Both slugs are added of course.
Today we are talking to Blaž Oražem, IT engineer and technical director of the Slovenian digital studio Spletna postaja. They started working with October CMS back in 2016 and today October CMS is their primary platform for developing custom solutions for different clients.