What kind of languages couldn't type on borderlands 3 in-game chat?

Borderlands 3 Borderlands 3 General Discussion
#1

I found some issue that I can’t type other languages in-game chat.
and Korean nickname displayed like “ㅁㅁㅁㅁㅁ”
and also can’t type korean in-game chat
Please tell me what else language not available on game chat?