[macOS 26.825.32147] Delegated message disclosure is unreadable and fails to expand

Version

• Codex Desktop: 26.825.32147 (build 7303)
• Bundled runtime: codex-cli 0.150.0-alpha.12.2
• macOS 15.1 (24B2082), Apple Silicon
• ChatGPT Pro

Bug

Messages sent from another task are rendered as black user-message bubbles in the light interface.

The delegated message is forced to two visible lines. The Show more control is also dark, producing near-zero contrast against the black bubble. Activating it does not expose the full message in the affected UI.

This makes most cross-task prompt content inaccessible.

Reproduction

1. Use Codex Desktop in the light interface.
2. Send a multi-line message from one local task to another with the built-in cross-task messaging tool.
3. Open the receiving task.
4. Find the message labelled Sent by ChatGPT from another task.
5. Observe the black bubble and two-line truncation.
6. Activate Show more.

Observed: the control is unreadable and the full message remains hidden.

Renderer evidence

The installed renderer follows this path:

• Delegated payload is passed to the ordinary user-message bubble.
• Delegated messages set collapsedLineCount = 2.
• Bubble uses bg-user-message text-user-message.
• Disclosure control uses text-codex-description hover:text-default instead of inheriting the user-message foreground.

This explains the black-on-black disclosure control. An expansion handler exists, so this is a rendering/interaction regression rather than a missing feature.

Expected

• Delegated messages remain readable for every supported theme and accent.
• Disclosure control inherits a contrast-safe foreground.
• Mouse and keyboard activation expose the complete message.
• aria-expanded and visible content update together.
• Renderer coverage includes light UI with a black user-message background.

Notes

No matching open or closed issue was found for this exact delegated-message presentation failure.

Possibly adjacent but distinct: #40794 concerns composer submission freezing after cross-task injection.

No app bundle, database, private Desktop state, task corpus, or UI was modified during diagnosis. Thread IDs and prompt contents are omitted.

Start by reproducing the delegated-message rendering in the light interface, then trace the renderer path that passes the payload to the ordinary user-message bubble. Check the collapsed two-line disclosure and its mouse and keyboard behavior. Done means readable contrast, full expansion, and synchronized aria-expanded and visible content, with coverage for a black user-message background.