Steps to reproduce:
1. After MH is connected to ILIAS: create new object "external content" in ILIAS with series or episode ID from existing series or episode. Access to series episode is public.
2. Click on the "external content" object in ILIAS
You are directed to the login screen of Matterhorn.
You are directed to the public series or public episode. Works only if you are logged in as admin in MH with the same browser.
Workaround (if any):