ChatGPT desktop Codex sign-in loop after successful authentication

Title: ChatGPT desktop Codex sign-in loop after successful authentication

After signing in with ChatGPT, Codex in the macOS desktop app briefly recognizes my account, then immediately returns to the sign-in screen. The bundled Codex CLI remains authenticated and successfully completes prompts.

Environment:

• macOS 26.3.1 (25D2128)
• ChatGPT desktop 26.820.60940 (build 7119), bundle com.openai.codex
• Bundled CLI 0.150.0-alpha.8
• MonoProxy: HTTP 127.0.0.1:8118, SOCKS5 127.0.0.1:8119

Reproduction:

1. Sign in using ChatGPT/device authorization.
2. CLI login status reports “Logged in using ChatGPT”; an authenticated prompt returns AUTH_OK.
3. Launch ChatGPT with proxy variables inherited.
4. Open Codex; it returns to the sign-in page.

Key log sequence:

• account lookup succeeds: authenticatedAccountPresent=true
• GET /backend-api/accounts/:param/settings uses cached token but returns 401
• error: “Missing valid access token or actor biscuit”
• auth status then changes to hasToken=false, nullReason=auth_token_missing, refreshToken=true
• account lookup fails with account_info_token_unavailable
• subsequent /wham requests return 401 without an attached token

I reinstalled the official signed app, reset its preferences/caches/containers, logged out/in again, and tested system/global proxy plus explicit proxy variables. The CLI and WebSocket connection now work, but the desktop 401/login loop remains.

Please investigate whether the desktop client or backend is losing the actor biscuit or account/workspace binding. No tokens, auth.json, device codes, or account IDs are included.