The only way to explain this is to give you the steps to follow o go to more >Cataloging o search in the cataloging search for something that won’t be found o you get no results o you click ‘z39.50 search’ to try to find it that way o note that the title field is populated with your search from the previous page o this is a nuisance and not a feature like it was maybe originally intended
It seems that everyone else likes this feature, or at least doesn't find it a nuisance. If it really still bothers you, you could write a system preference to turn it off.