Guests don't see host


I have installed jitsi on a debian server with host and guest authentications. Authentications run as expected but when /n/ guests are connected to a room created by an host, host sees all guests and guests only see other guests, not host.

On screen, host sees /n+1/ connected users, guests only see /n/ users.

How can I fix this trouble ? I haven’t seen anything in conf files.

Best regards,