[Windows] Terminal/PowerShell windows flash and disappear without user command

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?

On Windows 11, terminal/PowerShell console windows randomly pop up and disappear (2-3 windows at a time) without any user command. Also occurs when commands are being issued. Very disruptive during presentations.

What Should Happen?

Background processes should run silently without spawning visible console windows

Error Messages/Logs

Steps to Reproduce

1. Run Claude Code on Windows 11
2. Leave it idle or mid-conversation
3. Console windows flash and disappear on their own
4. Also occurs when issuing commands

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.170

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_