Codex panel empty in VS Code

What version of the IDE extension are you using?

26.5609.30741

What subscription do you have?

ChatGPT Plus

Which IDE are you using?

VS Code Insiders

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

When I open the Codex panel, the panel only shows an icon but does not load the content of the panel:

<img width="462" height="749" alt="Empty Codex panel" src="https://github.com/user-attachments/assets/a05f21e1-f87e-4fdd-a4a9-7bf6d2607cbe" />

After a while, the following message appears:
<img width="450" height="149" alt="Warning dialog with the title 'The window is not responding' and the description 'You can reopen or close the window or keep waiting'." src="https://github.com/user-attachments/assets/0aad383e-b542-488e-afda-1560a6f7b7ae" />

The output of the extensions gives the following log:

2026-06-15 10:23:09.306 [info] Activating Codex extension
2026-06-15 10:23:09.306 [info] [CodexMcpConnection] Spawning codex app-server
2026-06-15 10:23:09.306 [warning] [IpcClient] Received broadcast but no handler is configured method=client-status-changed
2026-06-15 10:23:09.724 [info] [CodexMcpConnection] Initialize received id=1
2026-06-15 10:23:09.911 [warning] [CodexMcpConnection] cli: message="codex_core_plugins::manager: failed to warm featured plugin ids cache error=remote featured plugin request to https://chatgpt.com/backend-api/plugins/featured failed with status 401 Unauthorized: {\"detail\":\"Unauthorized\"}"
2026-06-15 10:23:11.170 [warning] [CodexMcpConnection] cli: message="codex_core_plugins::manifest: ignoring interface.defaultPrompt[0]: prompt must be at most 128 characters path=C:\\Users\\LFernhomberg\\.codex\\.tmp\\plugins\\plugins\\ngs-analysis\\.codex-plugin/plugin.json"

What steps can reproduce the bug?

1. Open VS Code Insiders
2. Install Codex extension
3. Open Codex panel in chat area
4. Codex panel is empty and does not allow you to login

Based on the feedback of other bugs, I tried installing older versions as well as the release version. Furthermore, I renamed the ".codex" folder in the "Users" folder, so that it gets recreated. Both approaches did not fix the issue for me.

What is the expected behavior?

Codex panel loads correctly allowing me to login

Additional information

_No response_