When an item is attached to an active course and that item is a status that should be hidden (such as withdrawn, lost) using the system preference: OPAChiddenitems- this item should not be visible, however, on the OPAC, this item is visible. Steps: 1. Create a course (make sure it is active) 2. In sys pref: OPAChiddenItems set items that are withdrawn to be hidden 'withdrawn: [1] 2. Add an item 3. Make that item withdrawn. 4. Go to the OPAC- that item is visible in the course. 5. Click the title of the withdrawn item, get a 404 error. I also tested this with hiding itypes, and the items also showed when should have been hidden.