[BUG] /radio stops opening the browser after navigating to the Agents (beta) screen and back

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?

After navigating into the Claude Agents screen (beta) via the Left arrow key from the chat prompt and then returning to the session, the /radio slash command stops opening the browser.

The CLI still prints Opening Claude FM in your browser…, but no browser tab/window is actually launched. The command silently no-ops.

The regression is specific to slash commands whose side-effect is opening an external URL in the default browser:

• /radio is broken after visiting the Agents screen.
• /feedback is NOT affected — it continues to work normally.

Restarting claude restores /radio until the Agents screen is opened again.

What Should Happen?

After returning from the Agents (beta) screen, /radio should behave exactly as it does on a fresh session: open Claude FM in the default browser.

Error Messages/Logs

(no error printed in the terminal — the CLI prints "Opening Claude FM in your browser…" and then silently does nothing)

Steps to Reproduce

Environment:

• Claude Code version: 2.1.141
• OS: macOS 15 (Darwin 24.6.0, arm64 / Apple Silicon)
• Shell: zsh
• Terminal: Ghostty

Steps:

1. Start a fresh session by running claude in any project directory.
2. At the prompt, type /radio and press Enter.

• Expected & observed: the default browser opens Claude FM. ✅

1. From the prompt (empty input), press the Left arrow key to navigate into the Claude Agents screen (beta).
2. Navigate back to the chat session.
3. Type /radio and press Enter again.

• Expected: the browser opens Claude FM, same as step 2.
• Actual: the CLI prints Opening Claude FM in your browser… but no browser window/tab opens.

Additional notes:

• 100% reproducible across multiple sessions.
• Entering the Agents screen and returning is sufficient — no agent needs to be selected.
• /feedback (also a built-in slash command) is NOT affected by the same sequence, so the regression appears scoped to the "open URL in default browser" code path rather than slash-command dispatch in general.
• Workaround: quit and relaunch claude.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.141

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_