### Preflight Checklist - [x] I have searched [existing issues](https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug) 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? After upgrading to Claude Code 2.1.119 (also reproduces on 2.1.118), opening the `/mcp` slash command panel results in a fully frozen modal: arrow keys,

[BUG]: /mcp modal becomes unresponsive to all keys (arrows, Enter, Esc, Ctrl-C) — regression in 2.1.118/2.1.119

Status Fixed / completed

Reported on v2.1.119

Maintainer reply ✓ Yes — localden

Activity 3 comments · opened Apr 27, 2026 · closed May 20, 2026

💡 Likely answer: A maintainer (localden, collaborator) responded on this thread — see the highlighted reply below.

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?

After upgrading to Claude Code 2.1.119 (also reproduces on 2.1.118), opening the /mcp slash command
panel results in a fully frozen modal: arrow keys, Enter, and Esc are dropped, and the modal cannot
even be killed with Ctrl-C or Ctrl-\. The keys are reaching the process correctly (verified — see
below), so this appears to be a UI input-handling regression rather than a terminal issue.

Downgrading to 2.1.117 fully fixes it.

Possibly related to #42707 (Ink input hook race in MCP OAuth flow), but more severe — in #42707 keys
are still partially responsive and Ctrl-C still kills the modal. Here, signal handling itself is broken
from inside the modal.

What Should Happen?

/mcp modal should respond to navigation keys and Esc/Ctrl-C should dismiss it, as it does in 2.1.117
and earlier.

Error Messages/Logs

Steps to Reproduce

Run claude (v2.1.118 or v2.1.119, native installer on macOS)
Type /mcp → modal opens
Press any of: ↑ ↓ ← → Enter Esc — nothing happens
Press Ctrl-C — also nothing; modal cannot be dismissed
Only way out: kill the terminal session / SIGKILL from another shell

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.117

Claude Code Version

2.1.119 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

## Environment

Claude Code versions tested:
2.1.117 — works correctly
2.1.118 — broken
2.1.119 — broken
OS: macOS Darwin 25.3.0
Shell: zsh
Terminal: iTerm2 (also reproduces in tmux and outside tmux)
Install method: native installer (~/.local/share/claude/versions/)
TERM: xterm-256color

## Terminal verified healthy

Ran cat -v and confirmed all relevant keys produce correct escape codes:

↑ → ^[[A
↓ → ^[[B
Esc → ^[

So keys are reaching the process — this is not a terminfo / Option-as-Esc issue.

View original on GitHub ↗

3 Comments

github-actions[bot] · 4 months ago

Found 3 possible duplicate issues:

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🤖 Generated with Claude Code

localden collaborator · 3 months ago

Thanks for the detailed bisect. This was a keyboard input handling regression introduced in 2.1.118 and fixed in 2.1.120. Please update to the latest version and confirm the /mcp panel responds to navigation and Ctrl-C again. If you can still reproduce on 2.1.120 or later (especially without --resume), please reopen with the exact launch command and we will trace the remaining path.

github-actions[bot] · 1 month ago

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.