I tried Japanese, Korean and Cyrillic, they all don't work.

Internal server error on https://musicbrainz.org/label/9b0aa635-46cc-4fcb-b05e-616009bb1666?filter.name=%E3%82%B9%E3%82%BF%E3%83%BC%E3%83%A9%E3%82%A4%E3%83%89%E3%83%BB%E3%82%A8%E3%82%A2%E3%83%AA%E3%82%A2%E3%83%AB&filter.artist_credit_id=&filter.label_id=&filter.country_id=&filter.status_id=&filter.date=&filter.disambiguation=
Referrer: https://musicbrainz.org/label/9b0aa635-46cc-4fcb-b05e-616009bb1666?filter.name=we+bros&filter.artist_credit_id=&filter.label_id=&filter.country_id=&filter.status_id=&filter.date=&filter.disambiguation=