[BUG] "Type here to tell Claude what to do differently" truncates input in small 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?

It appears that the text box for the _"Type here to tell Claude what to do differently"_ does not fold text correctly. In small terminals, instead of expanding to fit the terminal and then gracefully wrapping, it truncates the text, appending ellipsis to the end.

<img width="506" height="309" alt="Image" src="https://github.com/user-attachments/assets/273fefad-f46d-418f-9415-375fff9c0585" />

This is somewhat unexpected as it's unclear whether user inputs are coming through or not.

What Should Happen?

The relevant text box should gracefully wrap.

<img width="954" height="389" alt="Image" src="https://github.com/user-attachments/assets/2c4f7d76-8c65-4dbe-beb6-6ae5caf733bf" />

Error Messages/Logs

Steps to Reproduce

Clone ruff into a directory. Then, run claude and prompt it with:

I want you to search through the current directory and discover the

easiest and fastest way for me to add an extension. The extension we will add is a static exception type checker, which will be responsible for testing whether a function throws an exception as per its contract.

Claude will ask you for further guidance (because the prompt was intentionally vague). Then, navigate to the _"Type here to tell Claude what to do differently"_ field in a very small terminal and start typing.

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This is a very convoluted way to reproduce the issue and there's obviously an easier way -- use claude regularly and the moment it asks you for further guidance, switch over to the _"Type here to tell Claude what to do differently"_ field, shrink your terminal and start typing.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.74 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_