When I try to link a Wikipedia item to a Wikidata element I usually add the language code (es) and click the TAB key to go to the next field and as ordering the sites alphabetically in Spanish "esperanto" (eo) goes first when going to the next field with TAB the es changes automatically to eo.
Is it possible to change this behavior and if in the input field we input a language code this value is kept even if another site goes first alphabetically?