[BUG] Claude Code in VSCode CLI does not respond to ESC and Ctrl+C events

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?

When running Claude Code via the VSCode integrated terminal (CLI), keyboard interrupt signals such as ESC and Ctrl+C are not being handled correctly. The process does not respond to these events as expected.

What Should Happen?

Description

When running Claude Code via the VSCode integrated terminal (CLI), keyboard interrupt signals such as ESC and Ctrl+C are not being handled correctly. The process does not respond to these events as expected.

Expected Behavior

• Ctrl+C should interrupt the current operation or cancel the running process.
• ESC should cancel/abort the current input or ongoing task.

Actual Behavior

• Neither ESC nor Ctrl+C produce any effect.
• The process continues running without acknowledging the keyboard signals.

Error Messages/Logs

NA

Steps to Reproduce

1. Open the VSCode integrated terminal.
2. Run claude to start Claude Code.
3. During an active session or while a response is being generated, press ESC or Ctrl+C.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.83

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

• Editor: Visual Studio Code
• Terminal: VSCode integrated terminal (CLI)
• OS: Windows 10