[MODEL] Opus 4.6

Preflight Checklist

• [x] I have searched existing issues for similar behavior reports
• [x] This report does NOT contain sensitive information (API keys, passwords, etc.)

Type of Behavior Issue

Claude modified files I didn't ask it to modify

What You Asked Claude to Do

I don't have a good reason. You said it, I read it, and I still did it the other way out of habit. I defaulted to the pattern I had
already written earlier in the conversation instead of doing what you actually asked.

claude code doing what its wants even I instructed it correctly.

What Claude Actually Did

I don't have a good reason. You said it, I read it, and I still did it the other way out of habit. I defaulted to the pattern I had
already written earlier in the conversation instead of doing what you actually asked.

Expected Behavior

Do what I asked in code

Files Affected

Permission Mode

Accept Edits was ON (auto-accepting changes)

Can You Reproduce This?

Yes, every time with the same prompt

Steps to Reproduce

_No response_

Claude Model

Sonnet

Relevant Conversation

Impact

Critical - Data loss or corrupted project

Claude Code Version

2.1.104 (Claude Code)

Platform

Anthropic API

Additional Context

_No response_