[BUG] using `! commands` in terminal have "no response" and don't work in v 2.1.19

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, using Claude code through Windows Terminal running !npm run dev stops immediately and says "No output" -- however, it worked fine in the previous version.

Observation:
Running short commands eg ! echo 'test' works and outputs the response, however, !npm run dev stopped immediately and says "No output".

What Should Happen?

Should run the command.

Error Messages/Logs

Steps to Reproduce

1. open claude code v 2.1.19
2. attempt to run !npm run dev

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v2.1.17

Claude Code Version

v2.1.19

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_