Backspace does not work correctly in Chat with keyboard and mouse

I am a Korean user who plays Minecraft with a mouse and keyboard.

At some point, letters are written strangely on the keyboard.

A bug occurs with the same symptoms in Korean and English.

BackSpace does not work in both Korean and English.

The text in the picture is '안녕하세요'

You will see a lot of difference between this word and the word in the picture.

It's inconvenient because I can't chat. I hope it gets fixed soon.