[WSL2] apply_patch hangs; Esc + two Ctrl+C required to exit session

What version of Codex is running?

0.61.0 and 0.62.0-alpha.3

What subscription do you have?

plus

Which model were you using?

gpt-5.1-codex-max

What platform is your computer?

Linux 6.6.87.2-microsoft-standard-WSL2 x86_64 x86_64

What issue are you seeing?

• apply_patch hangs consistently on WSL2.
• After Esc, Ctrl+C once just prints the footer; a second Ctrl+C is needed to exit.

Summary

On WSL2, apply_patch hangs. To break out, I must press Esc to return to the conversation prompt. After that, pressing Ctrl+C once shows the “Token usage … To continue this session, run codex resume …” footer, but the Codex process stays alive; I must press Ctrl+C a second time to exit to the shell.

Please investigate the WSL bridge / IPC for apply_patch and its SIGINT handling.

What steps can reproduce the bug?

1. Start Codex
2. Ask Codex to apply a tiny patch (e.g., change the single line in .apply_patch_test from patched_twice to patched_test).
3. apply_patch hangs and times out (~60s).
4. Press Esc to return to the conversation prompt.
5. Press Ctrl+C once: footer appears

Token usage: ...
To continue this session, run codex resume <session-id>
but the process remains.

1. Press Ctrl+C again: only then does the process exit to the shell.

What is the expected behavior?

• apply_patch should complete quickly.
• If Esc + Ctrl+C is used, the session should terminate after the first Ctrl+C; no second Ctrl+C should be necessary.

Additional information

• Regular edits via patch/sed/python - <<'PY' are instant; only apply_patch hangs.
• VS Code closed during repro.