macOS app: voice dictation and Apple Dictation fail in composer despite microphone access being allowed

Summary

In the Codex macOS app, both Codex voice dictation (Ctrl+M) and Apple Dictation fail to insert/transcribe text in the Codex composer, even though Apple Dictation works in other apps and macOS grants Codex microphone access.

Environment

• Platform: macOS 26.5.1 (25F80), arm64
• Codex app bundled CLI: codex-cli 0.142.0-alpha.1
• Codex app release observed in logs: 26.616.32156
• Bundle id: com.openai.codex

Reproduction

1. Open Codex macOS app.
2. Focus the composer.
3. Try Codex voice dictation by holding Ctrl+M and speaking.
4. Also try Apple Dictation in the composer.

Expected

Speech is transcribed into the composer.

Actual

No text is inserted/transcribed in the composer. Sending the prompt creates a turn, but app logs do not show a corresponding dictation/transcription success or failure event.

Diagnostics already checked

• macOS TCC logs show com.openai.codex requested kTCCServiceMicrophone and received authValue=2 / allowed.
• Control Center sensor logs show Codex attributed as an active microphone user.
• Codex app log shows the turn start around the attempted send, but no obvious dictation/transcription event nearby.
• Resetting microphone permission with tccutil reset Microphone com.openai.codex and re-approving was attempted locally.

Privacy note

I am intentionally not attaching full logs here because they may contain local paths or session details. I can provide redacted excerpts if useful.