Claude Code v2.1.53

Released Feb 25, 2026 (6 months ago).

"References this build" means the issue body mentions running 2.1.53 (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 v2.1.53

Ranked by community engagement (reactions and comments).

• [Bug] Bash tool execution failing or non-functional
  Resolved 💬 15 👍 22 #28333
• [Bug] EINVAL on Windows: Bash commands fail - cannot open task output file
  Resolved 💬 20 👍 14 #28364
• [BUG] GitHub Issue: Bash tool EINVAL on Windows
  Resolved 💬 16 👍 9 #28348
• remote-control fails: node: bad option: --sdk-url
  Resolved 💬 6 👍 11 #28334
• VS Code Extension: command 'claude-vscode.editor.openLast' not found when clicking Extension UI button
  Resolved 💬 12 👍 7 #28366
• [BUG] Bash tool EINVAL on Windows persists in v2.1.53 — stdio fd regression from v2.1.45 not fully fixed
  Resolved 💬 8 👍 5 #28343
• WorktreeRemove hook not invoked for subagent worktrees (isolation: worktree)
  Resolved 💬 7 👍 5 #28363
• [BUG] Bash tool EINVAL on Windows when project path generates long temp directory name
  Resolved 💬 5 👍 4 #28382
• [BUG] android mobile app, overlabs issue
  Resolved 💬 3 👍 4 #28349
• [BUG] Effective usable context window is significantly reduced by infrastructure overhead
  Resolved 💬 8 👍 2 #28389
• Custom statusLine command stopped working in 2.1.53+
  Resolved 💬 7 👍 2 #28526
• [BUG] extension.js contains hardcoded CI/CD Linux paths causing activation failure on Windows x64 with Node.js 24 / VS Code 1.109+
  Resolved 💬 6 👍 2 #28387
• [BUG] `claude remote-control` fails with "node: bad option: --sdk-url"
  Resolved 💬 3 👍 3 #28352
• [BUG] CLI v2.1.55 fails to connect to VS Code extension WebSocket server (regression from v2.1.53)
  Resolved 💬 5 👍 2 #28423
• Bash tool fails with EINVAL on Windows (v2.1.53)
  Resolved 💬 4 👍 2 #28377
• [Bug] Bash tool fails on Windows 11 with EINVAL when writing temp output files
  Resolved 💬 3 👍 2 #28358
• [BUG] Bash tool fails with EINVAL on Windows - cannot open task output file
  Resolved 💬 3 👍 2 #28357
• [BUG] tasks/ directory not created automatically on Windows (v2.1.53)
  Resolved 💬 3 👍 2 #28342
• [BUG] Claude Code 2.1.53 fails to activate on Windows - hardcoded Linux path in extension.js
  Resolved 💬 5 👍 1 #28397
• remote-control: child process spawn missing cli.js script path
  Resolved 💬 3 👍 1 #28361
• [BUG] Bash tool returns EINVAL on all commands for specific project directory (Windows)
  Resolved 💬 3 👍 1 #28360
• [Feedback] Degraded model reasoning and proactive behavior since mid-February
  Resolved 💬 2 👍 1 #28894
• [BUG] I installed the latest version 2.1.53 in vscode, but it doesn't work. It prompts "command 'claude-vscode.editor.openLast' not found". The version 2.1.49 works fine
  Resolved 💬 5 #28386
• [Bug] Security prompt repeatedly appears despite folder being untrusted
  Resolved 💬 2 👍 1 #28340
• [BUG] VS Code Claude Code Extension Stopped Working. (TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string...)
  Resolved 💬 4 #28388
• [DOCS] Symlinked skill directories under ~/.claude/skills/ work — please document the support level (cf. #41451)
  Resolved 💬 3 #68118
• [BUG] Opus automatically activated in VS Code
  Resolved 💬 3 #47500
• [BUG] The Claude Code Extension for VS Code (v2.1.61) freezes on Windows 11 ARM64.
  Resolved 💬 3 #29476
• File descriptor leak: settings.json opened but never closed on each tool call
  Resolved 💬 3 #28896
• [Bug] Anthropic API Error: KERNEL32.DLL access violation
  Resolved 💬 3 #28446

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