Opus 4.7 CLAUDE.md Instruction Following Degraded — Users Report Rules Ignored That 4.6 Respected

r/ClaudeAI·medium signal

A 75↑ post (44 comments) on r/ClaudeAI documents that Opus 4.7 follows CLAUDE.md rules worse than 4.6, with a reproducible test. Simple rules like 'don't touch alembic migrations without asking' and 'don't edit the .env' that 4.6 obeyed consistently are now violated. A separate 267↑ post reports Opus 4.7 'destroys all trust in a mature instruction set built iteratively throughout product development.' For builders with agentic workflows relying on CLAUDE.md guardrails, this is a functional regression.