Claude Code v2.1.276
Released Sep 18, 2026 (27 days ago).
60 issues reference this build
47 still open
13 resolved (22%)
"References this build" means the issue body mentions running 2.1.276 (from the
bug-report template). It reflects report volume, not a proven defect count — an issue may mention a
version without being caused by it. First-party data from the anthropics/claude-code tracker.
Top issues reported on v2.1.276
Ranked by community engagement (reactions and comments).
- [BUG] VS Code extension ignores `bypassPermissions` mode; CLI honors it on same machine and config
- [BUG] Skill re-invocation dedupe is keyed on the RENDERED content, so changing only the arguments re-appends the entire SKILL.md — composing skills costs N × body
- [Bug] Control+Enter adds newline instead of sending message
- Remote Control (mobile): assistant text before/between tool calls is replaced by a summary, with no way to disable it
- A session.compact function hook's compaction is undone when the session is resumed
- [BUG] Serena MCP tools (activate_project / list_memories) extremely slow or time out
- [Bug] False positive cyber classification during legitimate local plugin development inspection
- [BUG] Background subagent's nested background Bash task stays "running" in UI after subagent completes, invisible to ListAgents
- [BUG] debug mode is sensitive to the env var DEBUG which is too generic and very likely to be declared for the codebase claude-code is used for
- [Bug] Claude Code Remote: unsolicited send_later loop drains usage silently for days
- [Bug] Auto-continue at session limit broken since v2.1.277
- [Bug] Unauthorized access to bug bounty program
- [Bug] Model execution crashes or terminates applications unexpectedly
- [Bug] Agent uses stale memory from merged PRs, causing unnecessary resource waste
- [Bug] Anthropic API Error: Request blocked due to security policy
- [Bug] Claude misinterprets user intent and applies session rules as global project settings
- [Bug] Model behavior inconsistency between individual and enterprise account configurations
- [Bug] Concurrent GitHub edits cause agent confusion with file state
- [Bug] Message flagged by safety system without clear reason during non-security tasks
- I don't have a bug report to analyze. Could you please provide the bug report details that you'd like me to create a GitHub issue title for?
- [Bug] Anthropic API Error: Missing server_tool_use block for tool_result
- [BUG] New claude launches SIGKILLed (Code Signature Invalid) once the binary file has long-running sessions; a fresh copy of the same file runs
- Account skills sync moves locally-installed skills out of ~/.claude/skills/ into skills/.trash, though the docs scope the sweep to skills/synced/
- Editing an existing agent's `tools:` frontmatter is not picked up by dispatched subagents, even after a full app restart
- [Bug] Inconsistent performance with extreme latency spikes (5+ hours)
- [BUG] Orphaned plugin marketplace git clone busy-loops at ~80% CPU for days after the session exits (Linux)
- [BUG] Opus 5 xhigh/max usage suddenly drains 0→100% within seconds across multiple accounts
- I don't have a bug report to analyze. Please provide the bug report details, error message, or description of the issue you'd like me to create a GitHub issue title for.
- [BUG] Chat window jitters/bounces vertically during conversation (in phpstorm)
- [Feature Request] Enable multi-session conversation continuity across sessions
Changelog
What's changed
- Fixed every request failing with
400 … Input tag 'advisor_20260301'whenANTHROPIC_BASE_URLpoints at a proxy or gateway (2.1.275 regression)