Recognize/Use Kanji/Kana in K3B

I’m finding a problem trying to burn audio files (FLAC) to an audio CD when the titles/artists contain Kanji and Kana (Hiragana/Katakana) in the metadata. The program sees and uses the files, but the CD-Text turns the Japanese characters into underscores.

Is there a setting or package I’m missing to get this to work correctly in K3B?