Codex macOS updater can get stuck after clicking Update, leaving Codex, Autoupdate, and Updater.app idle without restarting

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

26.406.40811

What subscription do you have?

Plus

What platform is your computer?

Darwin 25.3.0 arm64 arm

What issue are you seeing?

• The update payload had already been downloaded locally.
• Sparkle cache contained a delta update file:
• ~/Library/Caches/com.openai.codex/org.sparkle-project.Sparkle/Installation/.../*.delta
• In my case the downloaded delta file was about 46 MB.
• The main app process was still running instead of exiting cleanly.
• The updater processes also stayed alive, apparently waiting for the app handoff/restart step to complete.
• No visible retry, error dialog, or recovery flow appeared.

What steps can reproduce the bug?

1. Open Codex on macOS.
2. Trigger an in-app update.
3. Click Update.
4. Wait for the app to quit and relaunch.

What is the expected behavior?

Codex should:

1. download the update,
2. quit cleanly,
3. apply the update,
4. relaunch automatically.

Additional information

If useful, I can provide:

• process list output,
• updater-related logs,
• cache/update file details.