Typing Korean texts is not working clearly

There's a serious problem that Korean texts are can't be typed clearly. When I try to type 안녕하세요, It shows ㅇ아안안ㄴ녀녕녕ㅎ하핫하세셍세요요. I think communite with other people on Minecraft is an important part of it. But, I had problem with this. Also It made my playing worse. Please fix this problem.