Desktop Code tab: dictation no longer shows the transcript live while speaking; the text appears only when recording stops (macOS)

What's wrong?

In the Claude Desktop app's Code tab, dictating with the microphone button used to show the transcript in the message box live, word by word, while I spoke (the live transcript is also described in #95510 and #55865). Now the box only shows the listening state while I speak, and the whole text appears at once when I stop recording.

Steps to reproduce

1. Open the Code tab and click into the message box.
2. Press and hold the microphone button ("Hold to record" on) and speak a sentence.
3. Watch the message box while speaking.

Expected

The words appear in the box as I speak, as before.

Actual

Only the listening state shows; the full text appears when I release the button.

Notes

The microphone menu only offers the input device and "Hold to record"; there's no setting for live text, so there's no way to get the previous behavior back.

Environment

• Claude Desktop 2.31226.1
• macOS 26.3.1 (a), MacBook Pro (Mac17,2)
• In-app microphone with the built-in mic