Running claude from VS Code integrated terminal opens 3 empty VS Code windows

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 launching claude from the VS Code integrated terminal, 3 new empty VS Code windows are opened
unexpectedly.

## Environment

• OS: Windows 11 Enterprise (10.0.26100)
• Launched from: VS Code integrated terminal

What Should Happen?

Claude Code should connect to the existing VS Code instance without opening any new windows.

Error Messages/Logs

Steps to Reproduce

1. Open VS Code
2. Open the integrated terminal
3. Run claude
4. Observe 3 new empty VS Code windows opening

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.619

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_