IME conversion results for Japanese (and possibly Chinese) are not displayed immediately

What version of Codex is running?

codex-cli 0.24.0

Which model were you using?

gpt-5

What platform is your computer?

Darwin 24.6.0 arm64 arm

What steps can reproduce the bug?

In the latest version of Codex CLI (0.24.0), IME conversion results (such as Japanese Kanji input) are not displayed immediately.

Steps to Reproduce

1. Install Codex CLI 0.24.0
2. Use a Japanese IME to input Hiragana like 'あいうえお'
3. Observe that the converted characters are not shown immediately, but only after cursor move

Screen recording:

https://github.com/user-attachments/assets/609c3063-e3ec-41ce-8aae-7f619fba7dd6

What is the expected behavior?

IME conversion results should be displayed immediately as they appear in the IME.

What do you see instead?

The converted characters partially appear and the rest appears after I move cursor.

Additional information

I guess this was caused by the changes for the queue messages feature https://github.com/openai/codex/pull/2637 .