We’ve just shipped a minor release of Sensei Content Drip that fixes some access issues and adds Russian translations.
Previously, depending on the settings in Sensei, it was possible for users who were not taking a course to see its lesson’s content before it was sent out. This has been changed such that if a lesson’s content is set to drip in the future, no access will be granted to any site visitor. This will take precedence over the Sensei setting to allow logged-out users to see course content.
You can find the full list of changes in the change log.