Deleted patrons shouldn't appear in the list at all, IMO. But it looks like it is specifically patrons with no card that break the UI -- a rare circumstance, but there's no constraint in the database that prevents it (actor.usr.card can be null), so the UI ought to handle it.
Deleted patrons shouldn't appear in the list at all, IMO. But it looks like it is specifically patrons with no card that break the UI -- a rare circumstance, but there's no constraint in the database that prevents it (actor.usr.card can be null), so the UI ought to handle it.