[Windows][26.825.4187.0] Pasted prompt is not recognized by composer and cannot be sent

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

OpenAI.Codex 26.825.4187.0

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Windows desktop, x64

What issue are you seeing?

In the Codex Windows app, pasted text is sometimes not properly recognized by the prompt composer.

When I paste a prompt into an existing Codex conversation, the app shows that it is processing/adding the pasted text, but the Send button does not become available. The UI behaves as if the composer is still empty.

Typing a space or another character does not reliably fix the issue.

Voice input can sometimes make the composer active again, but this may take a long time.

Opening a new Codex window/conversation fixes the problem temporarily. Pasting and sending prompts works normally in the new window, at least for some time.

What steps can reproduce the bug?

1. Open an existing Codex conversation in the Windows desktop app.
2. Copy a prepared prompt from another application.
3. Paste it into the Codex composer.
4. The pasted content appears to be processed, but the Send button remains unavailable.
5. Try typing an additional character or space.
6. The composer may still remain unable to submit the prompt.
7. Open a new Codex window/conversation.
8. Paste the same prompt there.
9. It works normally.

What is the expected behavior?

Pasting text into the composer should immediately make the prompt available for submission and enable the Send button.

Additional information

The issue appears to be session/window-specific because opening a new Codex window temporarily resolves it.

I can provide screenshots showing:

• the pasted-text state where the prompt cannot be sent;
• the same composer after adding text through voice input, where submission becomes possible.

Start by reproducing the paste failure in an existing Codex Windows conversation and compare it with a new window, focusing on the composer and Send button state. Trace the existing-conversation paste flow and the state that determines whether the composer can submit. Done means pasted text consistently enables Send without requiring extra typing, voice input, or a new conversation.