Text-editor in NetlifyCMS admin dashboard cannot type any Chinese characters normally

[dev-techmoe]

Describe the bug

Any Chinese words cannot be typed into the BODY editor (see GIF below)

To Reproduce

1. Go to admin dashboard (<site_url>/admin)
2. Click on "New Blog"
3. Scroll down to the "BODY" editor area and type some Chinese words with default Chinese IME in Win10 (Microsoft Pinyin)

Expected behavior
see below

Screenshots

Applicable Versions:

• Netlify CMS version: netlify-cms-app 2.12.19
• Git provider: Github
• OS: Win10
• Browser version Chrome 87.0.4280.141

(My site was generated by the "Deploy to Netlify" Button in here, I'm using Gatsby template)

CMS configuration

all using default config

[xianbinKit]

the same here

[MannyCooper]

Really love netlify-cms, please fix this bug soon if possible. This seems to only appear in the BODY editor.

[erezrokah]

Hi all 👋 We would love a contribution for this issue.

[banyudu]

Can't reproduce in macOS. Have tried Baidu Wubi, Baidu Pinyin, Sogou Wubi, Sogou Pinyin, and the JianTi Pinyin IME comes with macOS.

[inajob]

Same error in Japanese IME on Windows 10.

[kenchon]

Same bug in following environment (but not occurs in OS X):

Platform	OS X (Big Sur) + Chrome	Windows 10 + Chrome	iOS 14 + Safari/Chrome
Status	✅[1]	❌ [2]	❌ [3]

[1]: cursor behavior is strange, text input always successful
[2]: cursor behavior is strange, text input sometimes fails
[3]: cursor behavior is strange, can't input any texts

[kenchon]

I found similar issue #4539 and this PR #4607 solved this.

[kenchon]

I'm not sure I'm looking properly, as this code shows, markdown editor uses slate-react.
In slate-react project, IME related bugs are reported and I think ours are one of them.

Latest netlify-cms-widget-markdown uses "slate-react": "^0.22.0" and latest is 0.63.0.
Updating slate-react solves some of the issues we found maybe? 😂

[kenchon]

Here describes the root cause of the IME problem, and slate maintainer says this was solved by this PR.

Although there still remains some bugs in IME, updating slate should be the solution of this issue. The problem is updating slate requires many breaking changes ... 🤔

From this point of view, this issue is duplicate of #1347

[erezrokah]

Closing in favor of #1347