When modifying the code, Chinese characters will be changed to garbled text

What version of the Codex App are you using (From “About Codex” dialog)?

Windows Codex latest version

What subscription do you have?

plus

What platform is your computer?

x64-based PC

What issue are you seeing?

When modifying the code, Chinese characters will be changed to garbled text

What steps can reproduce the bug?

Have Codex modify the code block that contains Chinese characters

What is the expected behavior?

_No response_

Additional information

<img width="410" height="130" alt="Image" src="https://github.com/user-attachments/assets/8fe3b86a-7d52-46a5-8512-8cec21440395" />