I'm using DokuWiki at the following address : wiki.gestan.fr
In this Wiki, there is a namespace called wiki:partenaires, where @ALL group have no permission at all (only @partenaires group have a reading permission)
When I try to use the link http://wiki.gestan.fr/doku.php?id=wiki:partenaires
, without to be connected with a user belonging to @partenaires, the access is correctly refused.
But when I use the search function, as I am disconnected, the pages belonging to the namespace wiki:partenaire are shown in the search results, and are available to unconnected users.
For an example, as you are disconnected, you can search the word "Gestan", and retrieve a page http://wiki.gestan.fr/doku.php?id=wiki:partenaires:utiliser_wdl&s=gestan
. An unconnected user should not see it in the results, nor access it.