[BUG] No content on 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 I execute commands Claude is not able to peek at the console ouput. E.g.

What Should Happen?

Claude should be able to "see" the output of any console command.

Steps to Reproduce

 ▐▛███▜▌   Claude Code v2.1.15
▝▜█████▛▘  Opus 4.5 · Claude Max
  ▘▘ ▝▝   

❯ Run the tests and report back the results

● Bash(npm test)
  ⎿  (No content)

● Bash(npm test 2>&1)
  ⎿  (No content)

● Bash(npx vitest run 2>&1)
  ⎿  (No content)

It then goes on unsuccessfully, with 100 tries to find a way to read it.

I'ìm on Windows 10 (10.0.19045 Build 19045), using either Git Bash or Cmd in Windows Terminal.

This has been going on for a few versions. If I downgrade to v2.1.7 (latest working version), without touching anything else, Claude is able to see stdout without issues.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.7

Claude Code Version

2.1.15

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_