[BUG] fable 5 keeps getting blocked by your guard

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

fable keeps getting stopped by your guard. we are doing research into Georgia prison deaths. there is absolutely no reason fable should be stopping in these.

Using /feedback NEVER works

What Should Happen?

It should not fallback to older models

Error Messages/Logs

Fable 5's safeguards flagged this message. The safeguards  are intentionally broad right now and may flag safe and    routine coding, cybersecurity, or biology work. These 
  measures let us bring you Mythos-level capabilities        sooner, and we're working to refine them. Switched to      Opus 4.8. Send feedback with /feedback or learn more

Steps to Reproduce

Run queries on coroner reports

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.219

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

_No response_