Final Korean character is inserted into next pending input after option 3 in command approval modal

[fabric0de]

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

26.217.1959(669)

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Darwin 25.2.0 arm64 arm

What issue are you seeing?

This happens in the command approval modal that shows:

1. Yes
2. Yes, and don't ask again...
3. No, and tell Codex what to do differently

When I choose option 3, type Korean text, and submit, one final Korean character is inserted into the next pending input line.

What steps can reproduce the bug?

Steps to reproduce

1. Open the command approval modal.
2. Select option 3: No, and tell Codex what to do differently.
3. Type Korean text (example: 근데 그게 뭐지).
4. Submit.
5. After the modal closes, check the next pending input line.

Actual behavior

The final Korean character is inserted into the next pending input line (for example, 지 from 근데 그게 뭐지).

Expected behavior

No character should be carried over after submitting option 3.
The next pending input line should remain empty unless I type new input.

Test results (manual repeated runs)

• Korean input: reproduced consistently.
• English input (what is that): did not reproduce.
• Numeric-only input: did not reproduce.
• Reproduced on the same modal + option 3 path repeatedly.

What is the expected behavior?

This appears specific to Korean character input/composition handling, rather than a generic text submission issue.

Additional information

• Reproduces with Korean input.
• Did not reproduce with English input in my tests.
• Using mouse click on Submit did not reproduce; this mainly happens on Enter submit.
• The entered sentence itself is submitted correctly; only an extra trailing Hangul character leaks into the next pending input line.

[fabric0de]

Adding a follow-up since this issue is still untriaged.

Current impact in daily use:

• This happens repeatedly on the same modal path.
• After submitting option 3 with Korean input, one extra final Hangul character is inserted into the next pending input line.
• I have to manually clear that pending line every time, which is disruptive during normal workflow.

Why I suspect this is the cause:

• It reproduces with Korean input, but not with English or numeric-only input.
• It reproduces mainly when submitting with Enter.
• It does not reproduce when clicking the Submit button.
• The full sentence is submitted correctly, and only one trailing Hangul character leaks to the next input context.

This pattern strongly suggests an IME composition commit timing/order issue on the Enter submit path (modal close + focus transition).

Screenshots

1. Command approval modal (option 3 path)

2. Extra trailing Hangul character in next pending input line

[etraut-openai]

Which terminal emulator are you using? Is it the standard Mac "Terminal" program? Have you tried to repro this with other terminals?

I think your analysis is on point. The interaction between IMEs and terminals can be complicated and timing-sensitive. I suspect that the IME is injecting the final character in a way that it arrives after the Enter. Fixing issues like this without introducing regressions can be tricky.

[fabric0de]

I use Warp terminal emulator.

As you mentioned, this looks like a timing-sensitive and tricky issue.
To improve fix accuracy and reduce regression risk, I’ll update the issue with stronger reproducibility data and clearer hypotheses (input method, submit method, and environment matrix).

[wibaek]

Version 26.228.1430 (760)
Mac

I also occasionally hit this issue.