[Bug] Fable 5 model incorrectly routing to Opus due to false security/biology flagging

Bug Description
Fable 5 keeps flagging things that have nothing to do with security or biology and switching me to Opus. It's pretty much unusable for me at this time.

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.1.210
• Feedback ID: 9defca66-49c9-4235-be14-32784e7b938b

Errors

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