macOS 14.3: browser and desktop control fail at startup with TIOCSTI error

Environment

macOS 14.3, build 23D56

Desktop app 26.911.61220, build 9647

Apple Silicon

Feedback/session ID: 01a0a589-7312-7cd3-b755-699f00870a5e

Problem

Browser and desktop control are unusable. The control process crashes before connecting to a browser or application.

Exact error:

node_repl kernel exited unexpectedly
kernel_status: exited(code=65)
sandbox-exec: unbound variable: TIOCSTI
at , line 141, column 33

Steps to reproduce

Open a local task in the desktop app.

Request browser control or a Finder inspection through Computer Use.

The control process exits with the error above.

Expected: Codex connects to the browser or application and performs the requested action.

Actual: Startup fails before a connection is established.

Troubleshooting completed

Updated the desktop app from 26.908.40834, build 8881.

Manually confirmed Screen Recording and Accessibility are enabled.

Added ChatGPT to Accessibility, then fully quit and reopened the app.

Retested desktop and browser control after restarting. Separate new processes failed identically.

Local file reads and file creation in the task’s working folder succeeded.

macOS remains on 14.3. No app binary or sandbox security rule was modified.

Diagnostics

In-app feedback was submitted, and a diagnostic PDF was provided to OpenAI Support.

App logs: ~/Library/Logs/com.openai.codex/2026/09/17
Session transcripts: ~/.codex/sessions

The exact startup errors appear in the session’s tool outputs. App-log messages saying the tool service is “ready” do not establish that its control process started successfully.

Please investigate this startup failure and provide a compatible build or supported recovery procedure.

Start by reviewing the session tool outputs and the app logs under ~/Library/Logs/com.openai.codex/2026/09/17, using the reported sandbox-exec TIOCSTI failure as the entry point. Compare the failure across the separate processes described in the report; done means browser and desktop control start successfully on macOS 14.3 without the startup error.