When ordering from a suggestion you only see the suggestions that the logged in user managed. Most libraries don't work that way. An administrator approves a suggestion and then an acquisitions staff member does the ordering. In my tests I was logged in as a superlibrarian so I had all permissions. I also don't think this was always this way.
Kyle already filed it a little bit ago :) *** This bug has been marked as a duplicate of bug 12775 ***