Undo bug when encounter chinese words input

when input chinese words use chinese ime input method, then undo words input, the words in document seems messy and wired, the bug show in screen record video, which contains in the link below

the screen record video link is:
https://github.com/lianyzhou/onlyoffice_faq/raw/refs/heads/master/chinese_words_bug.mov

Hello @lianyzhou

Thank you for the video. We are processing it, please await a feedback.

Thank you for the patience. The bug was registered on this behavior, we are already working on it.
Once the issue is resolved, we will inform you.