vim mode in text file , the cursor is not correct for Chinese word

[iorilu]

the cursor only cover half of the word , if it's a Chinese word , it should be like in vim in terminal

you can put this Chinese word for a test, '需求问题' please check below two images

[takluyver]

It's likely that this is an issue with Codemirror, the Javascript editor component we use. Do you see the same thing on this demo site? https://codemirror.net/demo/vim.html

[iorilu]

I tried on this demo page , it seems it's correct in the editor