[BUG] Secondary input fields truncate with "..." instead of wrapping in narrow terminals

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 using Claude Code in a narrow terminal (e.g., ~60-80 columns), the main input field correctly wraps text across multiple lines.
However, secondary/inner input fields — such as the "chat about this" input when discussing a response, or the feedback input when rejecting a plan — display "..." and truncate the text instead of wrapping.

This makes it impossible to see what you're typing in these fields.

What Should Happen?

Secondary input fields should wrap text the same way the main input field does.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Code in a narrow terminal window (~60 columns)
2. Have Claude generate a response
3. Choose to "chat about" the response (or reject a plan)
4. Start typing in the secondary input field
5. Once text exceeds the terminal width, it gets truncated with "..." instead of wrapping

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.56 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Environment:

• OS: macOS (Darwin 24.5.0)
• Terminal: Terminal.app
• Shell: zsh
• Terminal width: ~60-80 columns (split screen with multiple Claude sessions)