[BUG] Model silently stops mid-task after tool call without generating follow-up

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?

Description

Claude Code silently stops execution mid-task after a tool call (typically an Edit) without generating any follow-up text or invoking the next tool. The conversation appears to hang - no output, no error, no indication that work has stopped. The user has to manually prompt to resume.

Actual behavior

The turn ends after the tool result with no output. No error, no permission prompt, nothing. Claude just froze.

Environment

• Platform: Windows 11 Pro N (10.0.26200)
• Claude Code: VS Code extension
• Model: claude-opus-4-6 (1M context)
• Frequency: Multiple occurrences over 2+ days
• Context size: ~50-80K tokens (not near limit)

Additional context

• NOT a permission issue - no prompt shown
• NOT a user interruption - user had to re-engage after silence
• Model resumes correctly when prompted - generation just stopped prematurely
• Happens during sequences of Edit tool calls

What Should Happen?

Expected behavior

After a successful tool call, Claude should continue with the next step. The turn should not end silently mid-task.

Error Messages/Logs

Steps to Reproduce

Steps to reproduce

1. Give Claude Code a multi-step implementation task (e.g., multiple file edits + typecheck)
2. Claude starts executing: makes the first edit successfully
3. After the edit tool result returns, Claude generates no response - the turn ends silently
4. User sends a follow-up message and Claude resumes exactly where it left off

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code v2.1.107 (win32-x64)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_