[BUG] ctrl+u used to delete one line, now it deletes the whole text box, ow my muscle memory

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?

Before updating a week or two ago, ctrl+u used to delete just the text box line and now it deletes the whole text box.

What Should Happen?

Please revert to prior behavior.

Error Messages/Logs

Steps to Reproduce

1. run claude
2. type something
3. before hitting enter, type ctrl+u
4. observe that all the text disappears

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.111

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

_No response_