[BUG] Copy/Paste not working in Claude Code inside VS Code Dev Container since v2.1.82

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?

Description

Copy and paste has stopped working in Claude Code when running inside a VS Code Dev Container (Docker) since version 2.1.82. It was working fine in previous versions.

Environment

• Host OS: macOS
• VS Code: Dev Container (Docker)
• Claude Code: VS Code Extension, v2.1.82+

Reproduction

1. Open VS Code with a Dev Container (Docker)
2. Open Claude Code within VS Code
3. Try to paste text using Cmd+V or Ctrl+V → does not work

What works

• Copy/paste in the VS Code integrated terminal (same Docker container) → works fine
• Copy/paste in Claude Code running in the macOS terminal (outside Docker) → works fine
• Copy/paste in Claude Code versions prior to 2.1.82 (same Dev Container setup) → worked fine

Expected behavior

Copy/paste should work in Claude Code inside VS Code Dev Containers, as it did before v2.1.82.

Notes

This is a regression introduced in v2.1.82. The VS Code terminal likely proxies clipboard operations through the VS Code API, while Claude Code may have changed its clipboard mechanism in this version, breaking access to the host clipboard from within the container.

What Should Happen?

Copy and Paste should work

Error Messages/Logs

Steps to Reproduce

Reproduction

1. Open VS Code with a Dev Container (Docker)
2. Open Claude Code within VS Code
3. Try to paste text using Cmd+V or Ctrl+V → does not work

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

1.2.80

Claude Code Version

1.2.83

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_