[BUG] StatusLine command repeatedly opens CMD windows on Windows 11

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?

Since approximately 2026-04-29, the statusLine command repeatedly opens CMD (console) windows on Windows 11 every few seconds.

Environment:

• OS: Windows 11 Home (10.0.26200)
• Claude Code: latest channel
• Shell: Git Bash (bash)

What Should Happen?

Expected behavior:
StatusLine command runs silently in the background with no visible console windows.

Error Messages/Logs

Steps to Reproduce

Steps to reproduce:

1. Configure statusLine in ~/.claude/settings.json with any command (shell script, Python script, etc.)
2. Start Claude Code on Windows 11
3. Observe CMD windows repeatedly appearing on screen

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.123

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

WSL (Windows Subsystem for Linux)

Additional Information

Expected behavior:
StatusLine command runs silently in the background with no visible console windows.

Actual behavior:
A new CMD window appears every few seconds (matching the statusLine refresh interval). This also occurs with hooks
commands.

Workaround:
Setting "disableAllHooks": true stops the CMD windows, confirming the issue is in how Claude Code spawns child
processes for statusLine/hooks. The fix is likely adding windowsHide: true to the Node.js child_process spawn options.

Note:
This behavior started recently and was not present before. It affects both shell scripts and Python scripts as the
statusLine command.