when delete all code, change emits not correct,

[OrangeCat3]

Describe the bug

Validations

• [X] Read the docs.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[rennzhang]

No such problem was found. Please provide a complete code case

[iyjian]

https://codesandbox.io/s/admiring-scooby-yub8zg?file=/src/App.vue

[iyjian]

@RennCheung the above is reproduce code

1. select all code text in editor use ctrl + A
2. enter "delete" button

the data.code won't change, you can see the text under the editor box.

[rennzhang]

The issue has been resolved. Please upgrade to the latest version

[iyjian]

thankyou