Codex desktop: unstable websocket reconnection after restart when resuming existing sessions

Summary

After quitting/restarting the Codex desktop app and reopening it, continuing an existing/older session often becomes unstable. The task stream repeatedly reconnects and may disconnect before completion, which makes the session unreliable and seriously affects normal use.

Environment

• Product: Codex desktop app
• Version: 26.422.30944 (2080)
• Platform: macOS desktop app

Steps to reproduce

1. Use a Codex session normally.
2. Quit/restart Codex, or close the app and open it again.
3. Reopen an existing/old session.
4. Start or continue a task in that session.

Actual behavior

The session connection becomes unstable and repeatedly attempts to reconnect. The UI shows reconnect attempts such as:

Reconnecting... 2/5
Reconnecting... 3/5
Reconnecting... 4/5
stream disconnected before completion: websocket closed by server before response.completed
Reconnecting... 5/5
stream disconnected before completion: websocket closed by server before response.completed

After this happens, the session may keep thinking/reconnecting instead of completing the response normally.

Expected behavior

After restarting or reopening Codex, existing sessions should resume normally and the websocket/stream should remain stable until the task completes.

Impact

This happens specifically after restarting/quitting and reopening Codex, then continuing old sessions. It severely interrupts coding workflows because long-running or active sessions become unreliable after reopening the app.

Additional context

I have screenshots showing the repeated reconnect attempts / websocket error and the Codex version dialog. I can provide them if needed.

<img width="2048" height="476" alt="Image" src="https://github.com/user-attachments/assets/a1d9398b-ec58-471a-82ad-c29b76b23538" />

<img width="568" height="382" alt="Image" src="https://github.com/user-attachments/assets/1564ef07-8eef-45f5-9a46-1fd0e0ed4e2a" />