[BUG] Claude Code Web Audio Mode retains previous message content after send

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 audio mode (microphone icon) is active in the web version of Claude Code, sending a message by clicking send (not hitting enter then enter) does not reset the input buffer. If you continue speaking after sending, the new audio appends to the previous message text rather than starting fresh. Submitting at that point resends the old message plus the new audio. Workaround clunk: manually toggle the microphone off and back on between messages.

What Should Happen?

When the send button is clicked, the input buffer should clear and the microphone should either turn off or reset, so the next recording starts fresh.

Error Messages/Logs

[No error messages.]

Steps to Reproduce

1. Open Claude Code web version
2. Enable audio mode (microphone icon)
3. Speak a message and click the send button (do not press Enter)
4. Observe that the microphone stays on after sending
5. Start speaking again
6. The new speech appends to the previous message text instead of starting fresh
7. Clicking send again submits the old message content plus the new audio

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Current version as of this moment.

Platform

Other

Operating System

Windows

Terminal/Shell

Other

Additional Information

This is for claude code in Chrome.