Existing threads remain blank, new threads work, intermittent SIGKILL crashes

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

26.623.101652

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

Summary

Existing Codex Desktop threads no longer load and remain completely blank.

New threads work normally.

The problem persists after a complete reinstall of Codex Desktop.

Environment

• Codex Desktop version: 26.623.101652
• Platform: macOS
• Subscription: ChatGPT Pro

Expected behavior

Existing threads should load normally.

Actual behavior

• Existing threads remain completely blank indefinitely.
• New threads work normally.
• Some existing threads load correctly (for example "Deploy Medivexia"), while many others never render.
• Git integration continues working normally.
• The repository and project are healthy.

The application intermittently crashes with:

SIGKILL

Different warnings appear between launches, including:

configured non-curated plugin no longer exists
unknown feature key in config: thread_tools
ignoring interface.defaultPrompt...
prompt must be at most 128 characters

The warning changes over time but the application eventually crashes with SIGKILL.

Troubleshooting already performed

I have already:

• Completely reinstalled Codex Desktop.
• Cleared application caches.
• Regenerated config.toml.
• Deleted and recreated Application Support data.
• Restarted macOS.
• Verified runtime installation.
• Verified plugin configuration.
• Verified Git repository integrity.
• Verified project integrity.
• Verified that local session files still exist under:

~/.codex/sessions

None of these actions resolved the issue.

Additional information

The repository is healthy.

Git works correctly.

The issue appears to affect loading/rendering of existing threads rather than the project itself.

I can provide logs, screenshots and additional diagnostics if needed.

<img width="1440" height="900" alt="Image" src="https://github.com/user-attachments/assets/bd604fd6-cc83-443b-856a-3393fcf797a2" />

<img width="4032" height="3024" alt="Image" src="https://github.com/user-attachments/assets/56c90068-10b5-49ab-b416-44e6810cb639" />
<img width="4032" height="3024" alt="Image" src="https://github.com/user-attachments/assets/55c7dc8e-ffce-4ca5-b06c-c5f1602a13a1" />

One additional observation:

Some existing threads still load correctly (for example "Deploy Medivexia"), while others consistently remain blank. New threads always work correctly.

This suggests the issue is related to loading/rendering specific existing thread data rather than the local project or Git repository.

What steps can reproduce the bug?

1. Open Codex Desktop.
2. Open an existing project.
3. Click on an existing thread that previously worked.
4. Wait a few seconds.

Result:
The thread remains completely blank or Codex eventually crashes with SIGKILL.

Creating a new thread in the same project works correctly.

What is the expected behavior?

Existing threads should load normally and display the complete conversation history without crashing.

Additional information

Additional observations:

• The problem persists after a complete reinstall of Codex Desktop.
• Local session files still exist under ~/.codex/sessions.
• The Git repository is healthy.
• New threads work correctly.
• Some existing threads still load (for example "Deploy Medivexia"), while others always remain blank.
• During troubleshooting I also observed intermittent SIGKILL crashes together with warnings mentioning plugins and configuration keys.