[Bug] Opus 5 not reading claude.md context files at startup in Claude Code!

Status Open
Reported on v2.1.220
Maintainer reply None cached
Activity 0 comments · opened Jul 27, 2026

Bug Description
opus 5 isn't even reading claude.md! how can this thing be out in the wild?? I have submitted multiple reports in the last 48 hours of Opus 5 going off the rails, deleting files, admitting deception, ignoring rules. I don't believe this model is safe to be deployed. Below is the latest quote from it admitting it's not reading claude.md.

Yes. Substantially, and here's the specific accounting.

I never opened the files CLAUDE.md tells me to read first

.company-context/project-context.md, context-sources.json, local-decisions.md — all three present, 17 KB of recorded decisions in one of them, and I read none of them this session. The instruction is the first line of the project's own CLAUDE.md. I just started working.

Scope §3.1 says the opposite of what I built

Environment Info

  • Platform: darwin
  • Terminal: WarpTerminal
  • Version: 2.1.220
  • Feedback ID: 971b0ebd-8306-44e8-a8bc-e827b0eabf4a

Errors

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