Searching for the artist "アテナ＆ロビケロッツ" in the inline indexed search returns no results. The inline direct search works, but the artist has been there for years and http://musicbrainz.org/search?query=%E3%82%A2%E3%83%86%E3%83%8A%EF%BC%86%E3%83%AD%E3%83%93%E3%82%B1%E3%83%AD%E3%83%83%E3%83%84&type=artist&limit=25&handlearguments=1 finds it fine so there's no reason it shouldn't also be found using the inline indexed search. Searching for the artist in the release editor has the same problem.