VS Code extension opens 3 new windows when running claude from integrated terminal

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?

Every time claude is launched from the VS Code integrated terminal, 3 new VS Code windows open automatically. This did not happen in
previous versions.

Environment:

• Claude Code CLI: latest
• Claude Code VS Code Extension: v2.1.69
• VS Code: 1.110.0
• OS: Windows 11 Home

Steps to reproduce:

1. Open VS Code with any folder
2. Open the integrated terminal (Git Bash)
3. Run claude
4. 3 new VS Code windows open automatically

Expected behavior: No new windows should open. Claude should run in the terminal as before.

Notes:

• Does NOT happen when running claude from CMD or PowerShell outside VS Code
• Disabling terminal.integrated.shellIntegration.enabled did not fix it
• Setting CLAUDE_CODE_SSE_PORT to empty via terminal.integrated.env.windows did not fix it
• The issue started with a recent extension update

What Should Happen?

not open 3 empty pages of vs studio code

Error Messages/Logs

No error messages are shown. The 3 windows open silently with no warnings or logs.

Steps to Reproduce

1. Install the Claude Code VS Code extension (v2.1.69) 2. Open any folder in VS Code
2. Open the integrated terminal (Git Bash or any shell) 4. Type claude and press Enter
3. Observe: 3 new VS Code windows open automatically

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

v2.1.69

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_