[BUG] File suggestion popup not dismissed when deleting @~/ input

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 typing @~/ in the prompt input, the file suggestion popup appears showing home directory contents (~/Applications/, ~/Desktop/, etc.). However, when deleting the text using Ctrl+U (kill line), the popup remains visible and doesn't close.

This only happens when using Ctrl+U to delete - when using backspace to delete character by character, the popup correctly dismisses.

What Should Happen?

The file suggestion popup should close when the @~/ text is deleted via Ctrl+U, just like it does when deleting with backspace.

Error Messages/Logs

_No error messages - this is a UI behavior issue._

Steps to Reproduce

1. Open Claude Code in terminal
2. Type @~/ in the prompt input
3. Observe: File suggestion popup appears with home directory contents
4. Press Ctrl+U to delete the entire line at once
5. Observe: Popup remains visible even though the trigger text is gone

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.12 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

The issue seems specific to using Ctrl+U (kill line) for deletion. Regular backspace deletion dismisses the popup correctly.