Jupyterhub with apache proxy / shibboleth / jhub_remote_user_authenticator

Hello all,
We had a working Jupyterhub authenticated with apache/shibboleth/jhub_remote_user_authenticator until version 0.9.6 .
Sadly after upgrading to any of the 1.0 series an admin can no longer access another user’s running notebook. (‘Control Panel -> Admin -> access server’).

Anyone with a working config?
Thanks!
C.