[BUG] Slash command search suggestion renders

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?

https://github.com/user-attachments/assets/b0b206ee-227e-484d-921d-29f5978ea0ea

The terminal is Ghostty.

Under certain conditions, the slash command search suggestion list contains duplicate items.

What Should Happen?

Obvious. Sane search suggestion list

Error Messages/Logs

Steps to Reproduce

1. Add slash commands with names, aaa and bbb.
2. Start the Claude Code and type /. The result is already glitchy. Duplicate items are shown.
3. Type a and delete it. There are now two entries of /bbb.
4. Repeat the step 3 and you get another /bbb entry every time.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.27 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_