[BUG] Rewind picker freezes (input loop hangs) when opened from a resumed session

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?

Title: Rewind picker freezes (input loop hangs) when opened from a resumed session

Version: 2.1.119
OS: macOS 24.6.0 (Darwin)
Terminal: VS Code integrated terminal (zsh); also reproduces in other terminals

Expected: Arrow keys move through the list, Enter selects a checkpoint, Esc/Ctrl-C exits the picker.

Actual: The picker is completely unresponsive. No key input is accepted — arrow keys, Enter, Esc, and even Ctrl-C do nothing. The terminal tab has to be killed and reopened. The claude process itself appears alive (the picker is drawn) but its input loop is dead.

Reproduction is consistent — happens on every resumed session I've tested.

What I've ruled out:

• Not a terminal-specific issue: reproduces in VS Code integrated zsh and other terminals
• Not a wrapper issue: reproduces with the standalone claude binary, not just under cmux
• Not a session-size issue: short sessions reproduce identically to long ones
• Not a keybinding issue: /rewind slash command produces the exact same freeze, so it's not the Esc-Esc handler
• Fresh (non-resumed) sessions work correctly — the bug is specific to the resume code path

The 2.1.119 changelog mentions related fixes for /resume and Escape handling, but this specific freeze remains.

What Should Happen?

Expected: Arrow keys move through the list, Enter selects a checkpoint, Esc/Ctrl-C exits the picker.

Actual: The picker is completely unresponsive. No key input is accepted — arrow keys, Enter, Esc, and even Ctrl-C do nothing. The terminal tab has to be killed and reopened. The claude process itself appears alive (the picker is drawn) but its input loop is dead.

Error Messages/Logs

Steps to Reproduce

Steps to reproduce:

1. Run claude --resume and pick any prior session (size doesn't matter — reproduced with

very short and longer sessions)

1. Once the session is loaded, press Esc twice (or run /rewind)
2. The checkpoint picker renders correctly with the list of checkpoints visible

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.119

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_