HTR :

1. on a site with ONE superuser (let's call it User1), create at least a content.
2. affect a second user (let's call it User2) as a superuser on this site
3. This user cannot see the contents from user1 in the SearchTool (but they can be seen with the PageTool or UnlockContentTool for instance)
4. If you create a content with any user at this moment, the other can see it in the SearchTool