[BUG] Search tool and Explore subagent always interrupted on WSL

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?

The Search tool and Explore subagent are immediately interrupted every time they run on WSL. The message "Interrupted · What should Claude do instead?" appears after every Search or Explore call, making codebase searching completely broken.

What Should Happen?

Search and Explore should complete normally and return results, just like the Bash and Read tools do.

Error Messages/Logs

● Search(pattern: "boletim", path: "/home/gustavo/projects/comum/comum")
  ⎿  Interrupted · What should Claude do instead?

● Explore(Find menu reference)
  ⎿  Interrupted · What should Claude do instead?

Steps to Reproduce

1. Install Claude Code on Windows with WSL (Ubuntu)
2. Open Windows Terminal with Ubuntu/WSL profile
3. Navigate to any project directory in the WSL filesystem (~/projects/...)
4. Run: claude
5. Ask any question that triggers a Search or Explore — e.g. "find all PHP files referencing boletim"
6. Observe that every Search/Explore call is immediately interrupted

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.6

Claude Code Version

2.1.78

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

• The Bash and Read tools work perfectly — only Search and Explore are affected
• Workaround: adding "NEVER use the Search tool or Explore subagent" to CLAUDE.md forces Claude to use bash grep instead, which works fine
• Downgrading to 2.1.6 alone does NOT fix it — the CLAUDE.md workaround is still needed on 2.1.6 too
• The interrupt happens instantly (5-12ms), suggesting the tool is aborted before it even runs
• Reproducible 100% of the time