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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.212

  • Fixed OTLP telemetry requests failing with missing Content-Length header when the request body was written in chunks rather than all at once. (search for "OTLP request body chunk conversion failed")
  • Fixed proxy auth helper TTL parsing to accept 0 as a valid value (previously 0 was silently ignored and defaulted to the built-in TTL). (search for "CLAUDE_CODE_PROXY_AUTH_HELPER_TTL_MS")
  • Fixed shell CWD read-back accepting network paths and automount-crossing paths that could cause incorrect directory resolution on Windows and NFS setups. (search for "shell cwd read-back is a network path")
  • Fixed cache_control being rejected by some proxies when sent on the api_system message tail; Claude now gracefully demotes the breakpoint and continues the conversation without interruption. (search for "retry:api-system-cache-demote")

See this entry in the whole of v2.1.212 →