Claude Code v2.1.150

Released May 23, 2026 (3 months ago).

"References this build" means the issue body mentions running 2.1.150 (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 v2.1.150

Ranked by community engagement (reactions and comments).

• [Bug] Anthropic API Error: Model's tool call could not be parsed (retry also failed)
  Open 💬 65 👍 114 #62123
• [BUG] plugin:github:github MCP fails with HTTP 400 — malformed JSON-RPC payload missing version tag
  Open 💬 20 👍 50 #64654
• [BUG] v2.1.150 adds server-side system prompt injection via `tengu_heron_brook` feature flag
  Resolved 💬 8 👍 50 #62061
• [BUG] Claude Code silently deletes conversation transcripts after 30 days by default
  Open 💬 22 👍 24 #62476
• Claude Code changed default model to 1M context without notifying Pro users
  Open 💬 33 👍 19 #62199
• [BUG] Appeal Form Redirect Loop After Account Restriction
  Open 💬 39 👍 5 #62503
• [BUG] Pressing Esc to exit /btw mode rejects the pending tool-use prompt instead of just exiting the mode
  Open 💬 11 👍 10 #64568
• [BUG] Bash safety classifier intermittently unavailable on claude-opus-4-7, blocks tool calls
  Resolved 💬 4 👍 11 #62170
• [BUG] subscribe_pr_activity delivers human review events but not bot review events (from GitHub Apps like chatgpt-codex-connector[bot] and gemini-code-assist[bot])
  Resolved 💬 8 👍 8 #62096
• Mouse tracking breaks terminal right-click context menu and text selection
  Resolved 💬 7 👍 8 #61936
• [BUG] Clicking thinking blocks no longer expands them in VSCode
  Resolved 💬 4 👍 8 #61679
• [Bug] Desktop app (Code tab) 1.9659.4: Opus 4.8 "tool call could not be parsed (retry also failed)" still reproduces
  Resolved 💬 3 👍 8 #64658
• Context window status bar shows 200k for Claude Sonnet 4.6, but model supports 1M tokens
  Resolved 💬 24 👍 1 #61734
• Auto-compact stopped working for third-party API providers since v2.1.161
  Open 💬 8 👍 6 #65585
• [Bug] jdtls-lsp spawns per-subagent instances causing >50 GB RAM exhaustion in large Java workspaces
  Resolved 💬 6 👍 5 #64536
• [BUG] Claude Code spawned ~3,000 parallel bash processes in 17 seconds, causing OOM crash and hard reboot.
  Resolved 💬 12 👍 3 #62193
• [BUG] compact
  Open 💬 11 👍 3 #65340
• [BUG] Windows: VS Code extension hides sessions when drive-letter case in recorded cwd differs from current workspace cwd
  Open 💬 11 👍 3 #62288
• [BUG] /desktop still fails on Windows MSIX installs (Claude Code 2.1.150, Claude Desktop 1.8555.2.0)
  Resolved 💬 4 👍 5 #62028
• Bug: Desktop app shows "Usage Limit Reached" incorrectly
  Resolved 💬 10 👍 3 #61673
• [Bug] VERY sensitive cyber-safeguards
  Resolved 💬 4 👍 4 #62191
• [Bug] Glob and Grep missing from Agent Teams deferred tools catalog
  Resolved 💬 6 👍 3 #61845
• Bash sandbox (bubblewrap) corrupts `!` to `\!` in commands, making the sandbox unusable for agentic workflows
  Resolved 💬 5 👍 3 #64301
• [Bug] Anthropic API Error: 529 Overloaded - Server temporarily unavailable
  Resolved 💬 2 👍 4 #62187
• Regression in 2.1.150-2.1.158: malformed tool_use blocks not parseable, retry-resistant
  Resolved 💬 1 👍 4 #64176
• [BUG] False positive "Usage Policy violation" errors on normal coding requests
  Resolved 💬 4 👍 3 #62619
• [Bug] Anthropic API Error: Tool result block missing corresponding tool use block
  Resolved 💬 3 👍 3 #62577
• [BUG] Windows: Bash tool (grand)children survive command completion/kill as unkillable orphans — no per-command Job Object, and `SILENT_BREAKAWAY_OK` defeats the one that exists
  Open 💬 8 👍 1 #62659
• Suppress recurring TaskCreate "task tools haven't been used" system-reminder in plan-mode or when plans/ files are active
  Resolved 💬 2 👍 3 #62323
• [BUG] Claude Code scheduled task caused ~$500 no-op polling spend.
  Open 💬 10 #74547

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