News tagged "regression"

Claude Code 2.1.275 gateway regression: advisor_20260301 input tag causes 400 errors on ANTHROPIC_BASE_URL proxies, fixed in 2.1.276

Claude Code 2.1.275 Broke Every Gateway Proxy. 2.1.276 Fixed It the Same Day.

A new internal request tag in 2.1.275 caused 400 errors on every proxy-routed API call. 2.1.276 hotfixed it the same day. Breakdown of the failure, affected configs, and three secondary operator changes worth auditing.

September 18, 2026via Anthropic

claude

Claude Code 2.1.177 Changelog: MCP Hang, CLAUDE_CODE_OAUTH_TOKEN Bug, Slash Parser Regression

Claude Code 2.1.177 changelog: stdio MCP calls hang when claude -p loads a full fleet, CLAUDE_CODE_OAUTH_TOKEN is shadowed by stale on-disk credentials causing 401s, /compact is forwarded as plain text, and the Windows build cannot launch. Fleet pin and fix guide.

June 15, 2026via anthropics/claude-code GitHub issues

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