[Windows] Chrome popup click consistently fails with CDP Runtime.evaluate timeout

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

26.803.41515

What subscription do you have?

ChatGPT Pro

What platform is your computer?

Windows 11 Pro, version 25H2 (OS Build 26200.8973)

What issue are you seeing?

The Codex Chrome control connection consistently times out when clicking a normal enabled button inside a popup window.

Codex can successfully:

• open the popup;
• switch to the popup;
• read the popup DOM and fixed text;
• confirm that the button is visible and enabled.

However, clicking the button fails with:

Timed out after 3000ms waiting for CDP command Runtime.evaluate.

In the post-reinstallation test, the failure occurred during round 1 while clicking the popup button in state STATE_INITIAL. Round 2 was not attempted.

No Chrome control kernel reset, popup handle loss, or plugin disconnection was observed.

What steps can reproduce the bug?

1. Open the current Windows ChatGPT desktop app with the Chrome plugin installed.
2. Open a non-sensitive local test page served only on 127.0.0.1.
3. Click a button on the parent page to open a normal popup.
4. Switch control to the popup.
5. Read the fixed text POPUP_CONTROL_TEST_OK.
6. Confirm that the popup test button is visible and enabled.
7. Click the popup test button.
8. The CDP Runtime.evaluate command times out after 3000 ms.

What is the expected behavior?

Codex should click the enabled popup button, observe its state change, return to the parent page, close the popup, and repeat the same sequence without a CDP timeout.

Additional information

Troubleshooting already completed:

• Confirmed that the ChatGPT desktop app is up to date.
• Completely restarted Windows, Chrome, and the ChatGPT desktop app.
• Uninstalled and reinstalled the Chrome plugin.
• Confirmed that the Chrome extension has full site access.
• Confirmed that the ChatGPT Chrome side panel loads normally.
• Reproduced the issue in a fresh Codex chat using a non-sensitive local test page.
• Confirmed that the same popup-click timeout occurred before and after reinstalling the plugin.
• All local test files and the temporary HTTP server were cleaned up.

Feedback/session ID:

019fecaf-9d7b-71c3-8639-8fa4dde4e95c

Possibly related issue: #35051, although that report involves file transfer behavior. This reproduction does not involve file uploads or downloads.