[macOS][26.727.51351] ChatGPT history stuck on skeletons; /conversations?conversation_origin=tpp&limit=100 returns HTTP 500 timeout

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

ChatGPT Desktop 26.727.51351 (build 6119); bundled runtime: codex-cli 0.146.0-alpha.9.2

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

ChatGPT conversation history does not load in the macOS desktop app. The sidebar remains indefinitely on skeleton placeholders.

The same account and conversation history load correctly on chatgpt.com in Chrome. Codex chats also remain accessible in the desktop app.

The desktop log shows that account lookup succeeds:

authenticatedAccountPresent=true
authMethod=chatgpt
result=succeeded

Immediately afterward, both conversation-list requests fail:

GET /conversations?conversation_origin=tpp&expand=false&is_archived=false&is_starred=false&limit=100&order=updated&offset=0

HTTP 500
{"detail":"Request timeout"}

The variant containing hide_snorlax=false fails with the same response. There are no relevant 401, 403, or 429 responses: the request reaches the backend and receives an HTTP 500 timeout.

What steps can reproduce the bug?

1. Launch ChatGPT Desktop on macOS.
2. Sign in to an account that has existing ChatGPT conversations.
3. Select ChatGPT mode.
4. Observe the conversation list in the sidebar.
5. Wait at least 30–60 seconds.
6. The sidebar remains on skeleton placeholders indefinitely.
7. Open chatgpt.com in Chrome using the same account.
8. Observe that the complete conversation history loads normally in the browser.

The issue persists after:

• Fully quitting and reopening the desktop app
• Signing out and signing back in
• Confirming the same account is used in Chrome
• Resetting the desktop application caches
• Repeating the test across multiple app launches

What is the expected behavior?

The desktop app should display the same ChatGPT conversation history that is available on chatgpt.com.

If the Work/TPP conversation request fails, regular Chat history should still be displayed instead of leaving the entire combined Recents sidebar indefinitely in its loading state.

Additional information

In-app feedback was submitted with this Feedback ID:

019fbc9d-77ca-7692-bf10-2ca6ab880125

Latest confirmed occurrence:

Local time: 2026-08-04 11:29:07 UTC+7
UTC:        2026-08-04 04:29:07

The same failure has repeated across multiple app launches since at least July 29.

Working hypothesis: an account- or query-specific backend timeout for conversation_origin=tpp&limit=100 is combined with a desktop UI degradation bug where the failing Work/TPP request keeps the combined Chat and Work Recents sidebar on skeleton placeholders.

Potentially related issues:

• #36623 — Mac desktop app maintains a different conversation history than web and iOS
• #33333 — Unified desktop upgrade removes access to existing ChatGPT history
• #36460 — ChatGPT Desktop does not refresh its conversation list

This issue is distinct from #36460 because fully quitting and reopening the app does not restore the history.