Created attachment 125697 [details] An instance of the bug In the results page of search the catalog (both in the opac and the staff interface), I notice a stage behavior for field 711. When $e is filed koha display square bracket even when there is nothing inside ($j and $4 are empty) Example: 711 $aMostly Mozart Festival $eOrchestra result: Orchestra Mostly Mozart Festival []. behavior check on master 21.05 Test plan: 1- Be sure to use koha with MARC21 2- Find or create a record with a 711 $e field but no 711 $j and no 711 $4 3- Search the catalog for your record (be sure to have more than one result) 4- On the results page see that empty square bracket are displayed after 711 field