Codex Windows App crashes/freezes when pasting a long Windows stack trace into the prompt box

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

26.602.40724

What subscription do you have?

plus

What platform is your computer?

Microsoft Windows 11 Home Edition 10.0.26200 x64

What issue are you seeing?

The Codex Windows desktop app freezes when I paste a long Windows PowerShell / Node.js stack trace into the prompt input box.

The app does not completely exit, and the window controls still work, but the main UI becomes unusable. I can still scroll the left chat list, but I cannot click or interact with conversations or the input area. The mouse cursor stays in a text-selection/I-beam state.

A shorter PowerShell error message does not seem to trigger the issue. The freeze happens every time when pasting a longer Node.js/npm stack trace with long Windows paths and repeated error output.

What steps can reproduce the bug?

1. Open the Codex Windows desktop app.
2. Open any conversation, or create a new conversation.
3. Copy a long Windows PowerShell error message containing a Node.js/npm stack trace.
4. Paste the full error message directly into the Codex app prompt input box.
5. The app becomes frozen/unresponsive immediately after pasting.

Observed behavior:

• The app window itself does not fully close or disappear.
• The window control buttons in the top-right corner still work: minimize, maximize, and close.
• The left sidebar chat list can still be scrolled up and down.
• However, the app content becomes effectively unusable: I cannot click into conversations or interact with the prompt area.
• The mouse cursor remains in a text-selection/I-beam state, as if it is stuck in text selection mode.

I also tried pasting a shorter PowerShell error message, and the app did not freeze. The freeze only happened when pasting the longer Node.js error message / stack trace, such as the one below.

What is the expected behavior?

The Codex Windows desktop app should not crash or freeze when a user pastes a long terminal error message or stack trace into the prompt box.

Expected behavior:

• The pasted text should be inserted successfully.
• The prompt input box should remain responsive.
• The user should be able to edit, delete, or submit the prompt.
• If the pasted content is too large or unsupported, the app should show a clear warning instead of crashing.

Additional information

_No response_