civicrm_participant_search does not include event_type, participant_status and participant_role in result

When using civicrm_participant_search from api/v2/Participant, the result omits the fields event_type, participant_status and participant_role.

Those fields are fetched from the database, but the fields fetched are "event_type_id", "participant_status_id" and "participant_role_id". But looking at $query->_element, the expected names are "event_type", "participant_status" and "participant_role" (note the missing "_id").

Changing in CRM/BOA/Event/Query lines 110, 118 and 128 to name those fields as expected fixed this issue for me, but I'm not sure about other side effects.