Codex Desktop drops substantive live text from the visible task after the turn advances

What version of the Codex App are you using?

ChatGPT/Codex macOS app 26.727.51351, build 6119. Bundled CLI: codex-cli 0.146.0-alpha.9.2.

What platform is your computer?

macOS 26.1, build 25B78.

What issue are you seeing?

A long, substantive text result was displayed in a Codex Desktop task and was readable while the task was active. After the conversation advanced, that visible information disappeared from the task. Scrolling back did not recover it, so the user had to ask Codex to reconstruct and display it again.

The local session JSONL still contains the full text in a completed custom_tool_call_output record. The loss therefore appears to be in completed-turn rendering, replay, or promotion of visible intermediate content, rather than generation or local persistence.

This is a data-loss-like user experience: information that the app visibly presented as part of the conversation is not durably reviewable afterward.

Affected task ID: 019fc599-24f2-7c21-b4ec-c17620848e7d

What steps can reproduce the bug?

1. Open a long or resumed local Codex Desktop task.
2. Have Codex produce a substantial text result during the turn, including text returned through a tool-result or intermediate-update path.
3. Confirm that the full text is visible in the task.
4. Continue the conversation or allow the task to advance to a later completed state.
5. Scroll back to the earlier result.
6. Observe that the substantive block is no longer visible, although the session JSONL still contains it.

The failure was observed on 3 August 2026. It was not intentionally dismissed or deleted.

What is the expected behavior?

Any substantive content displayed to the user as part of a task should remain available after turn completion, thread replay, and later conversation turns. If some live status content is intentionally transient, the app should not place substantive answer content there without also preserving it in the completed task.

What is the actual behavior?

The text appears during live execution and later vanishes from the visible task. The user experiences this as lost information even though the underlying session record still has the bytes.

Additional information

This resembles the completion/replay boundary reported for disappearing tool images in issue 35371, but this reproduction is text on the macOS desktop rather than an image on Codex Remote. It also differs from the older terminal scrolling issue 6427 because the persisted content is present and the affected surface is the desktop app.

No raw session logs are attached because they contain private project context. The reporter can provide a redacted excerpt or upload the affected session through the in-app feedback flow if maintainers request it.