This is happening with multiple translated articles that have already been saved and published, but we get a 404 on them because the slug is being removed from the editor. Steps to reproduce the issue: Go to a translated article that's missing the slug Add the slug Manually save draft or publish the article, it'll say it was successful Access the published article, you'll see a 404 Refresh the editor page, you'll be taken to the dashboard as if the article no longer exists Go back to the article in the editor, you'll see the slug is missing