Minecraft typing issue

Tbh this had already happened a long time ago, but now the situation is even worse, so I had to report it here. Basically, it deletes the original words in chat or signs (and commands) when I type the symbol ‘ or Chinese characters (handwriting + pinyin typing). Originally only handwriting was affected, so it wasn’t much of a big deal. But now I have to copy the text I want in an another app then paste in Minecraft. Just why? I have a video to give you examples, the world in the video has no mods installed.

 

Video link: https://drive.google.com/file/d/1lJsC7RcuswCZ5A2P11lkipXVE3c2ZIA8/view?usp=drivesdk