category permissions dont work with articles

• Error

i migrated my tiki 2.x to tiki 6.6 this weekend. Formerly i have configured permissions for specific groups by defining a category and granting tiki_p_view_categorized permission for the category to a group. So it was able to add for example the category "top secret" to an article and just let those users (groups) see the article that had permission tiki_p_view_categorized for this category. Now everyone can see everything because those permissions are obsolete. But how do i configure this then to hide all those categorized items from other users? meanwhile i noteiced that the problem only occurs in articles. wiki pages and so on are doing fine. Can this be a bug, or is here a special configruation reqwuired?

This is the configuration (special permissions for the category are set just for the group "Mitglied":

Hinzugefügte Rechte:

Mitglied: articles_read_heading, download_files, rate_article, read_article, topic_read, view, view_category, view_directory, view_faqs, view_fgal_explorer, view_fgal_path, view_file_gallery, view_freetags, view_html_pages, view_image_gallery, view_sheet, view_shoutbox, view_tiki_calendar, view_trackers, wiki_view_attachments, wiki_view_comments, wiki_view_history

Entfernte Rechte:

Anonymous: view, topic_read, read_article, articles_read_heading, view_directory, view_faqs, view_file_gallery, view_html_pages, view_image_gallery, list_image_galleries, search, watch_structure, list_file_galleries, create_tracker_items, messages, view_trackers_closed, download_files, watch_trackers, view_trackers, read_comments, view_calendar, view_events, list_newsletters, modify_object_categories
Admins: admin
Mitglied: subscribe_email, suggest_faq, forum_edit_own_posts, forum_post, forum_post_topic, forums_report, post_comments, read_comments, send_pages, access_closed_site, view_poll_results, vote_poll, attach_trackers, submit_link
Redakteur Kalender: add_events, change_events, view_calendar, view_events
Redakteur WIKI: edit, wiki_view_history, modify_object_categories
Redakteur Links: admin_directory, submit_link, admin_directory_cats, admin_directory_sites, autosubmit_link, validate_links
Redakteur Artikel: approve_submission, edit_submission, submit_article, autoapprove_submission, edit_article, modify_object_categories
Redakteur Gallerie: admin_galleries, batch_upload_images, upload_images
Gastkartenbesteller: use_as_template
Redaktuer Newsletter: send_newsletters
Redakteur Archiv: edit_gallery_file, upload_files
Einreicher Artikel: submit_article
Mitfahrer Norwegen 2012: wiki_view_comments
Registered: forums_report, forum_post_topic, forum_read, forum_edit_own_posts, forum_post

This bug has been demonstrated on show2.tiki.org

Please demonstrate your bug on show2.tiki.org

This bug has been demonstrated on show.tikiwiki.org

Please demonstrate your bug on show.tikiwiki.org