AnalysisDevelopersSeptember 14, 2026

Reddit user reports Fable 5.1 safeguards flagging Unreal shader work

A r/ClaudeAI user says Claude Desktop's Fable 5.1 safeguards flagged RT shader work in Unreal Engine as cybersecurity and dropped the session to Opus 4.8. The same task ran without issues in Cursor, which the user attributes to Anthropic's own safeguard implementation.

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