Deleted ChatGPT chats remain in desktop sidebar; delete and archive return conversation_deleted #43665

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

Not captured. Feedback ID below is provided for diagnosis.

What subscription do you have?

Not captured.

What platform is your computer?

macOS:

Darwin 27.0.0 arm64 arm

What issue are you seeing?

Chats deleted on chatgpt.com still appear in the desktop app. Attempts to delete or archive the remaining entries fail. Signing out and signing back in did not fix the issue.

The desktop app logs confirm that the server considers the affected conversations deleted. GET, DELETE and PATCH requests return HTTP 404 with errorCode=conversation_deleted and can_retry=false.

Sanitized response:

{
  "detail": {
    "message": "Conversation has been deleted. Start a new chat.",
    "code": "conversation_deleted",
    "can_retry": false
  }
}

What steps can reproduce the bug?

1. Delete ChatGPT chats on chatgpt.com.
2. Open the desktop app and observe that the deleted chats remain visible.
3. Try deleting or archiving those entries; the operations fail.
4. Sign out of the desktop app and sign back in.
5. Observe that the issue remains.

Feedback ID: 01a07ea6-12a3-74f0-84bb-8b7f8b96750b

What is the expected behavior?

Chats deleted on chatgpt.com should disappear from the desktop sidebar. If an operation receives the terminal conversation_deleted response, the stale sidebar entry should be reconciled and removed.

Additional information

Sanitized diagnostic events from September 8, 2026 (UTC):

2026-09-08T01:31:58.220Z
method=DELETE routePattern=/conversation/id/{conversation_id}
status=404 errorCode=conversation_deleted can_retry=false

2026-09-08T01:32:06.591Z
method=PATCH routePattern=/conversation/{conversation_id}
status=404 errorCode=conversation_deleted can_retry=false

2026-09-08T01:33:09.800Z
method=GET routePattern=/conversation/{conversation_id}
status=404 errorCode=conversation_deleted can_retry=false

The exact root cause is not confirmed. The visible sidebar entries disagree with the server's deleted-conversation responses.

Related reports found before filing: #39897, #40219, #41661 and #42768. This report supplies an additional reproduction and feedback ID.

Conversation titles, contents, affected conversation IDs, and unrelated logs are omitted.