Not seeing this issue in the latest 5.5 build 5.5.2.0.20151219144653_653c0d4 editing catalog item when a resource from provider is removed or while accessing a service catalog item . Seeing another issue when the template used in item is removed . Opening another bz for it https://bugzilla.redhat.com/show_bug.cgi?id=1295524
We have been unable to reproduce so I am closing this issue for now. If the issue appears again please reopen the ticket with steps to reproduce.