[BUG] the word "synthetic" consistently triggers refusal for AUP violation

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?

I give a stack trace including the line: $ExternalSyntheticLambda0.onItemClick(R8\$\$SyntheticClass:0)
at
I try multiple variations and consistently get refused for AUP violation.
I then open the prompt in vim, %s/[Ss]ynthetic//g, and Claude happily gets to work

What Should Happen?

Claude should not search for the string "synthetic" as a way of detecting AUP violations, because that is obviously ridiculous.

Error Messages/Logs

Steps to Reproduce

1. Produce a Java stacktrace referencing such classes
2. Paste it into claude with some instruction or other about it

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.92 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

_No response_