Search results presented under page for unregistered users

As presented on screenshot if I'm unregistered user I see search results under page and looks like they are unstyled...

If I log in to xwiki then they are presented as expected - results are visible under field where I type search query.

I think it might be related to permissions but don't know what to do more - checked and search page and children are set to 'view' for unregistered users.