[BUG] Claude Code response issue

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When I respond to in Claude Code, my response disappears. My response is regarded and claude responds but there is not "receipt" of my response in the string of messages. I am not sure if this is for existing channels or new

<img width="988" height="317" alt="Image" src="https://github.com/user-attachments/assets/b8da91e3-14a3-4346-9584-2bbaed8d0486" />

What Should Happen?

My chat response should show up in the chat

Error Messages/Logs

Steps to Reproduce

Enter a message into claude code.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

claude-sonnet-4-6

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_