[BUG] Crash/React Error #31 when using Tab autocomplete on slash commands in Ghostty

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 start typing a slash command (e.g., /xxx) in the Claude Code CLI and press the Tab key to trigger autocomplete, the application crashes immediately.

Instead of completing the command, the interface freezes and outputs a "Minified React error #31". The session becomes completely unresponsive (dead), and I am forced to manually terminate the process using Ctrl+C.

What Should Happen?

Pressing Tab while typing a slash command should autocomplete the command text (fill in the rest of the name) or display the available command options in the terminal UI without causing a crash.

Error Messages/Logs

ERROR Minified React error #31; visit https://react.dev/errors/31?args[]=object%20with%20keys%20%7Boptional%7D for the full message or use the
      non-minified dev environment for full errors and additional helpful warnings.

file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:8722

- F9 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:8722)
- VB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:10832)
- ND (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:12400)
- rE (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:14685)
-  (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:15198)
- dZ (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:35538)
- PK (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:51684)
- AX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:85828)
- Lh (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:84806)
- nj (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:732:84631)

This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch().

Steps to Reproduce

1. Open your terminal application (I am using Ghostty).
2. Start the Claude Code CLI (claude).
3. Begin typing a slash command into the input field (e.g., type /cle or /xxx).
4. Press the Tab key on the keyboard.
5. Result: The application crashes with the React error shown above and the session hangs.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.7

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

• Terminal: Ghostty
• OS: macOS (implied by /opt/homebrew path in logs)
• Installation Method: Homebrew (implied by path)
• Recovery: The only way to exit the frozen state is to send a SIGINT (Ctrl+C).
• React Error Details: React Error_#31 usually indicates that an object was passed as a child to a React component where a string or number was expected ("Objects are not valid as a React child"). This suggests the autocomplete component might be trying to render a raw object instead of a string value.