In my setup on a dedicated root server I have got a working simplesamlphp installation, which uses a SQL connection to authenticate users managed in a database. I tried to connect it with my dokuwiki installation. Hence I used the
https://www.dokuwiki.org/plugin:authsaml ... a big thanks to the developers. I got it working to a point where the username (uid) gets propagated to dokuwiki apparently, since I get directed to the start-page and have the username in parentheses in the top right corner. Logging into dokuwiki with an administrator account shows me that formerly non existing users are created and also their real names are brought into dokuwiki's users, so this seems to work.
But after authenticating with simplesaml and working in my dokuwiki as "logged in" user, as soon as I click on any link in the sidebar (changing to another namespace in dokuwiki) or try the "update profile" link next to the username, the username disappears in the top right corner. Also if I configured the users through dokuwiki's ACL to be able to edit pages I never see a pen symbol next to an article.
Any ideas on that?