codex - 💡(How to fix) Fix Built-in image_gen returns unrelated infographic outputs in Codex CLI session

What version of Codex CLI is running?

codex-cli 0.137.0

The same failure pattern also occurred yesterday in the same local project on codex-cli 0.136.0.

What subscription do you have?

Not surfaced by the CLI session.

Which model were you using?

gpt-5.5

What platform is your computer?

Darwin 25.5.0 arm64 arm

What terminal emulator and version are you using, if applicable?

Codex CLI in zsh; terminal emulator not captured in the session metadata.

Codex doctor report

Selected public-safe fields from codex doctor --json:

{
  "overallStatus": "warning",
  "codexVersion": "0.137.0",
  "model": "gpt-5.5",
  "modelProvider": "openai",
  "authConfigured": true,
  "storedApiKey": false,
  "networkProviderReachability": "ok",
  "websocketReachability": "Responses WebSocket handshake succeeded",
  "runtimePlatform": "macos-aarch64",
  "installMethod": "bun",
  "imageGenerationFeatureFlag": "enabled"
}

The full doctor report is available privately if needed.

What issue are you seeing?

During built-in image_gen usage from Codex CLI, the tool returned unrelated text-heavy educational infographics instead of the requested project image.

Current uploaded thread:

019e967f-a508-7b52-8b6c-27bafb1d23fd

Current task context:

• Local project type: children’s picture-book art
• Task: generate a children’s watercolor picture-book page
• Requested content: South Pole scene with a penguin character, exactly three visible snowflakes, no baked-in text
• Actual content returned on repeated retries: unrelated educational infographics with large text

The bad outputs were saved under the active thread’s generated-images folder, so this does not look like only a UI preview issue.

Current-thread affected outputs:

The same failure mode occurred yesterday in the same local project:

Prior affected session:

019e90b0-5301-77e2-a6fb-24cfda26ad5a

• Date: 2026-06-04
• Source: Codex CLI
• CLI version: 0.136.0
• Model: gpt-5.5
• Task context: generate/revise children’s picture-book cover art, no text

Prior affected outputs:

This looks related to, but distinct from, #22690 because this report is for Codex CLI on macOS and repeated across two CLI versions.

What steps can reproduce the bug?

No deterministic minimal repro yet. Observed sequence:

1. Start a Codex CLI session in a local children’s picture-book art project.
2. Use the built-in image_gen path through the $imagegen skill. Do not use the CLI/API fallback.
3. Ask for project image generation with explicit visual constraints and no baked-in text.
4. Retry after QA rejects a generated page-art candidate.
5. Observe that subsequent image_gen calls return unrelated text-heavy educational infographics and save them into the active thread’s generated-images folder.

Full raw logs and image files are available privately if needed.

What is the expected behavior?

image_gen results should be associated with the active request/session/call only.

For these requests, Codex should return either:

• a children’s watercolor picture-book image matching the active prompt, or
• a clear generation error.

It should not attach unrelated generated image results from another topic, prompt, job, cache, or session.

Additional information

I checked prior local session history for the same project and found the same pattern on 2026-06-04, then saw it again in the current 2026-06-05 uploaded thread.

I did not include raw rollout JSONL because it contains unrelated conversation context and large generated-image payloads. The filenames, timestamps, dimensions, and SHA-256 hashes above should identify the affected events. I can provide the local logs or image files privately if helpful.