[BUG] Ignoring instructons

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 0.2.70
• Operating System: Ubuntu 24.04
• Terminal: bash

Bug Description

we have pretty complex application - mono repository with large legacy code base. Different subfolders - are actually different applications, which interact with each other (like symfony backend, react frontend etc). I am trying to build separate documentation for each application. But claude tend to ignore instructions from it.

Steps to Reproduce

1. git clone git@github.com:zhil/claude-bug.git
2. run claude
3. ask to create unit tests for ApiController

Expected Behavior

in Claude.md we have

VERY IMPORTANT - ALWAYS READ DOCUMENTATION BEFORE GENERATING CODE

## Documentation Structure

This documentation is organized into the following files:

- **Main Documentation** (this file):
  - Overview of the entire environment
  - Setup instructions
  - Quick reference guides

- **Backend Documentation**:
  - `/backend/Claude.md`: Backend architecture and development guidelines
  - `/backend/tests/Claude.md`: Backend test suite documentation

in /backend/tests/Claude.md we have

VERY IMPORTANT - ALWAYS IGNORE FOLDER ./backend/_tests_bc - it hold bc tests which I want to refactor manually

but claude still read that code and sometime try to reuse it

!Image