The main entry form of corporate names (110), uniform titles (130), topical terms (150), geographical names (151), and genre/form (155) are not indexed with 'Match' search field in Elasticsearch standard mapping. As a result, the respective records are not present on the result list when performing an 'All headings' search for the authority records with the main heading form (MARC 21).
*** This bug has been marked as a duplicate of bug 33099 ***