Issue with online editor when writing Chinese characters

[hatsune-miku]

Bug description

When writing in Chinese, the slate's (the editor implementation behind gitbook) internal data structure is randomly corrupted, leading to unstability like:

• Unable to delete characters using Backspace
• Unable to insert new lines using Enter
• Editor stop responding to keyboard events
• Web page refreshes itself (possibly a js exception occurred)

In some cases a F5 will help but in other cases the entire page is corrupted and I have to screenshot everything, create new page and retype them (copy & paste can stop working, too).

How to reproduce

I didn't find a determined path to reproduce a slate internal corruption but these steps may help:

1. Use a Chinese IME
2. Type both Chinese and English
3. Do some delete and insert
4. Then the problem will be very likely to appear

Additional context

• This happens every 2 lines of text in average.
• Any Chinese IME is ok - for example, the Windows 11 builtin IME.
• I can write original markdown or HTML and sync content to git book but it's far less convenient.
• Not all slate-based editors have this problem.

[addisonschultz]

@viktorrenkema Was this similar to the issue you were looking into?