Persistent Backwards Compatibility Insertion Despite User Rejection

[taylorsatula]

Bug Description My brother in christ Claude won't stop trying to add backwards compatibility. I say it inline in conversation, I put it in CLAUDE.md, I interrupt its outputs to tell it "no backwards compatibility" and inevitably three messages later it tries to do it again. I don't know of any other compulsion Claude is more addicted to than adding backwards compatibility.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 1.0.31
• Feedback ID: 4b5ff2d2-2ab1-4242-b254-2f050f041a9b

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at NZ (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:700:3921)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:9014\n    at Q (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:17199)\n    at GX (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:8160)\n    at fS (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:7241)\n    at R9 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:622:11408)","timestamp":"2025-06-23T05:24:40.524Z"},{"error":"Error: Language not supported while highlighting code, falling back to markdown: \n    at aD (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1472:1184)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1472:912\n    at Array.map (<anonymous>)\n    at kK (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1472:903)\n    at DU2 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1865:7514)\n    at xE (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:80:19803)\n    at mT (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:82:42555)\n    at gT (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:82:38104)\n    at qq (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:82:38032)\n    at eE (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:82:37886)","timestamp":"2025-06-23T05:26:53.979Z"},{"error":"Error: Request was aborted.\n    at Qt._createMessage (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1308:6810)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2025-06-23T17:49:09.417Z"}]