[Bug] False positive reasoning_extraction safeguard flag on legitimate requests

Bug Description
Possible false positive: [reasoning_extraction] I believe my message was incorrectly flagged during a normal conversation in Claude Code. My intent was to get ordinary assistance with my task. I was not asking the model to reveal hidden chain-of-thought, private reasoning traces, or confidential system instructions. A normal answer, a concise explanation, or a summary of the work would have been sufficient. Claude Code displayed this error: “Opus 5.5 (1M context)'s safeguards flagged this message.” Details: [reasoning_extraction] Please review the flagged message and its surrounding conversation to determine whether this was a false positive. If it was, please use this report to improve detection so that legitimate requests are not unnecessarily blocked. Model shown in the error: Opus 5.5 (1M context) Request ID: req_011CfWX2ZR9XLjhBzY3uoqqV Message ID: msg_011CfWX2f8wkM35B4hwpobUX

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.284
• Feedback ID: d02a66f2-4fd6-4cac-9b47-a993dc19b6cf

Errors

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