[BUG] Sent message lost from history and display when pressing esc + up arrow

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?

I sometimes write a prompt and send it, realize I have one detail wrong, press esc instead of esc twice. If after the esc I press up, I see the prior message, the pending prompt message is gone, and pressing down back shows nothing. (if I press esc->down, the message is intact).

I don't do this on purpose, but it's definitely annoying when I have a long prompt and it disappears.

Note that this doesn't happen if the prompt is the first one in a session, since "up" probably needs to navigate to something in the history.

What Should Happen?

The aborted message should appear after pressing up. Alternatively, the aborted message should appear when pressing down after esc->up.

Error Messages/Logs

Steps to Reproduce

1. Send a prompt to claude, wait for it to finish.
2. Send another prompt
3. While it's thinking, press esc once, press up.
4. The first prompt will appear, and the second prompt is now gone

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.167 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_