If you search for a manifest hash in workbench, you land on a page that pretends to be a collection page but is not.
It has all sorts of misleading features, like a 'copy to project' button that doesn't work.
This needs to be changed.
If there is only one collection that points to this manifest hash, workbench should redirect there instead. If there are multiple, it should have a page that clearly indicates that and lets the user choose one to view.