AI Assistant Not Following Custom Rules/Instructions

Describe the Bug

  • Assistant repeatedly violated specific custom rules about RSpec testing philosophy
  • Rules were clearly provided in cursor-rules and memories
  • Assistant acknowledged the rules but continued writing mocked tests
  • This happened multiple times despite corrections
  • Assistant seems to fall back to “typical” patterns instead of following custom instructions

Assistant repeatedly violated the provided clear testing philosophy rules

Steps to Reproduce

provide custom rule to not mock objects excessively in Ruby Rspec tests
(a fully stubbed-out test does not test anything)

Expected Behavior

Assistant should consistently follow custom rules provided in workspace

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.2.2
VSCode Version: 1.99.3
Commit: faa03b17cce93e8a80b7d62d57f5eda6bb6ab9f0
Date: 2025-07-07T06:08:52.104Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.5.0

Additional Information

Impact: Not following instructions wastes time having to correct the same issues repeatedly

Does this stop you from using Cursor

Yes - Cursor is unusable

Which model?

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