[BUG] cmd+delete and option+delete no longer work in chat input (regression)

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?

The keyboard shortcuts cmd+delete (delete to start of line) and option+delete
(delete previous word) no longer work in the Claude Code chat input field.
These shortcuts previously worked and stopped working at some point recently.

• cmd+delete: should delete from cursor to beginning of line — does nothing
• option+delete: should delete the previous word — does nothing

Confirmed the shortcuts work correctly in Warp itself (e.g. in a shell prompt),
so this is not a terminal/Warp issue. The key sequences are being passed through
to Claude Code but not handled.

Version: 2.1.170

Platform: macOS, Warp terminal

What Should Happen?

• Expected: Previous word / line deleted
• Actual: Nothing happens

Error Messages/Logs

Steps to Reproduce

• Steps to Reproduce: Open Claude Code in Warp, focus the chat input, type some text, press option+delete or cmd+delete

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.170 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Warp

Additional Information

_No response_