Detailed transcript view in codex.

What variant of Codex are you using?

Macos app

What feature would you like to see?

Desktop does not render reasoning summaries even though summary events reach the visible renderer.

10723 closed with "Desktop supports live and retained reasoning summaries" but I cannot see it.

Environment

• macOS
• Codex Desktop 26.730.61639
• Build 6234
• Model: gpt-5.6-sol
• Reasoning effort: ultra
• model_reasoning_summary = "detailed"
• model_verbosity = "high"

What I see

During a task, the conversation shows assistant messages and collapsed tool activity such as “Read files” or “Ran commands.” It does not show any live reasoning summaries, and there are no retained summaries to expand or review afterward.

Diagnostics

The Desktop logs for the affected task show all of the following:

• concurrent_reasoning_summaries is enabled
• the turn starts with summary=detailed
• concurrentReasoningSummariesFeatureOverrideEnabled=true
• nonempty reasoning-summary parts are received
• the summary items are completed
• the primary renderer is visible

The logs include generated summary titles such as:

• Planning GitHub issue review
• Verifying installed app version and update status
• Verifying feature enablement and closure

None of those summaries are visible in the conversation.

This suggests that summary generation and event delivery are working, but the Desktop renderer is not displaying the events.

Additional information

No response

Start by tracing the Desktop renderer handling of the nonempty reasoning-summary parts described in the issue, using the supplied logs and generated summary titles as reproduction evidence. Compare the event-delivery path with the visible conversation and retained-summary views. Done means live summaries appear during a task and completed summaries remain available to expand afterward.