Claude Code v2.1.15

Released Jan 21, 2026 (7 months ago).

"References this build" means the issue body mentions running 2.1.15 (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 v2.1.15

Ranked by community engagement (reactions and comments).

• [Feature Request] Add native Nix/NixOS support or maintain npm installation method
  Open 💬 6 👍 27 #20012
• v2.1.15 crashes on CPUs without AVX (regression from 2.1.14)
  Resolved 💬 33 👍 18 #19907
• New 'native' installer: Bun/Zig hype train delivers 2010 anti-patterns: no version control, rollbacks, or professional package management
  Resolved 💬 10 👍 22 #20044
• Claude Desktop App: Cowork tab stuck on 'Sending request' - UUID validation error
  Resolved 💬 16 👍 13 #20016
• [BUG] CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS doesn't remove ?beta=true query params and anthropic-beta headers
  Resolved 💬 18 👍 12 #20031
• [BUG] LSP plugins not working with native/standalone binary installation
  Open 💬 6 👍 14 #20050
• [BUG] Bun crashes with "CPU lacks AVX support. Please consider upgrading to a newer CPU."
  Resolved 💬 14 👍 9 #19904
• [BUG] No win32-arm64 binary exists.
  Resolved 💬 16 👍 6 #20043
• [BUG] - Native installation v2.1.15 interactive mode exits immediately on WSL (Ubuntu 20.04)
  Resolved 💬 11 👍 7 #20115
• [Feature Request] Add keyboard shortcuts and activity indicators for multi-session navigation
  Resolved 💬 4 👍 8 #28147
• [BUG] Change installation method from npm to native in Docker file
  Resolved 💬 3 👍 8 #19985
• 500 error with all actions
  Resolved 💬 9 👍 4 #22781
• [BUG] `claude update` downloads full binary even when already up to date
  Resolved 💬 3 👍 5 #20046
• [BUG] I am getting out of usage error but already have tokens and limits API Error: 400 - Invalid Request You're out of extra usage. Add more usage credits at: https://claude.ai/settings/usage Then retry your request
  Resolved 💬 14 👍 1 #45033
• [Feature Request] Implement fuzzy file search for @ symbol file mentions
  Resolved 💬 8 👍 3 #20065
• [BUG] Continue support for illumos/Solaris platforms via npm
  Resolved 💬 4 👍 4 #20256
• [Bug] OAuth token expiration requiring frequent re-authentication
  Resolved 💬 5 👍 3 #21070
• [BUG] hooks don't run in headless mode
  Resolved 💬 5 👍 3 #20063
• Claude Code 2.1.15 crashes on Windows 11 with Bun segmentation fault (address 0x113)
  Resolved 💬 5 👍 2 #20148
• Claude Code 2.1.15 crashes with illegal instruction on pre-AVX CPUs (Westmere Xeon)
  Resolved 💬 5 👍 2 #19928
• [BUG] Cannot start or update CC due to JS FATAL ERROR
  Resolved 💬 10 #20029
• [BUG]
  Resolved 💬 4 👍 2 #19999
• Chrome extension not connecting despite correct native messaging host configuration
  Resolved 💬 3 👍 2 #25051
• [Feature Request] Add cursor shape support for vim mode with ANSI escape sequences
  Resolved 💬 3 👍 2 #22604
• Bash permission patterns with `:*` suffix not auto-allowing commands
  Resolved 💬 3 👍 2 #20385
• Feature Request: Expose session ID programmatically
  Resolved 💬 3 👍 2 #20132
• [BUG] Permission patterns in settings.json not being respected - commands still prompt for permission
  Resolved 💬 3 👍 2 #20088
• [BUG] Continue support for older CPUs via npm
  Resolved 💬 6 👍 1 #20020
• [BUG] Rendering in windows terminal is broken
  Resolved 💬 5 👍 1 #20405
• [BUG] Claude Code Hangs with Next.js Dev Server + `run_in_background`
  Resolved 💬 5 👍 1 #20140

Changelog