The dropdowns next to the text box inputs differ on the Staff-client and OPAC Staff includes/OPAC is missing: Language Publication date Acquisition date Corporate name as phrase Series title is nested under Title in Staff, toplevel in OPAC There are a few more examples, but these illustrate the point. bug 2467 says this is by design, but I would say they should mirror each other as closely as possible
I also believe this to be by design: location language = only work when codes are entered, so this is more an expert feature. acquisition-date = also requires a special format YYYY-MM-DD Changing some others and adding them to the OPAC might be debatable, but I see a pointin offering more options to staff users than to OPAC users.