Claude Code v2.1.29

Released Jan 31, 2026 (7 months ago).

"References this build" means the issue body mentions running 2.1.29 (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 v2.1.29

Ranked by community engagement (reactions and comments).

• [BUG] Verbose mode not displaying thinking blocks in v2.1.31 (regression)
  Resolved 💬 36 👍 24 #22977
• [BUG] High sustained CPU usage (~100% per instance) even when idle
  Resolved 💬 14 👍 27 #22275
• [BUG] Rate limit 429 errors despite dashboard showing available quota - Two Max accounts, documented inconsistencies
  Open 💬 11 👍 20 #22876
• Plugin skills don't support `disable-model-invocation` like user skills do
  Open 💬 12 👍 17 #22345
• [BUG] Inconsistent and Undisclosed Quota Accounting Changes in Claude Max Plan. Legal liability claim ready.
  Open 💬 14 👍 16 #22435
• Internal server error
  Resolved 💬 13 👍 16 #22764
• [BUG] Verbose mode not displaying thinking blocks in 2.1.42 (regression since 2.1.29)
  Open 💬 9 👍 17 #25980
• [BUG]
  Resolved 💬 8 👍 17 #22637
• [BUG] Ctrl-B cursor movement stops working after using Ctrl-R or Ctrl-G
  Resolved 💬 5 👍 17 #22315
• [Bug] Rate limit triggered before reaching session usage limit (71%)
  Open 💬 12 👍 14 #23030
• API Error: 500 {"type":"error","error":{"type":"api_error","...
  Resolved 💬 12 👍 13 #22802
• API Error: 500
  Resolved 💬 12 👍 13 #22765
• Keybinding set to null consumes keystroke instead of passing through
  Resolved 💬 4 👍 15 #22626
• getting API 500 errors repeatedly
  Resolved 💬 5 👍 14 #22769
• [Bug] High CPU usage at idle/prompt state
  Open 💬 12 👍 11 #22509
• [BUG] Number keys auto-select options instead of typing in "Other" text input on AskUserQuestion prompts
  Resolved 💬 4 👍 13 #22300
• API Error: 500 {"type":"error","error":{"type":"api_error","...
  Resolved 💬 3 👍 13 #22815
• API Error: 500 {"type":"error","error":{"type":"api_error",...
  Resolved 💬 8 👍 11 #22794
• [BUG] WebFetch returns 403 on Wikipedia and other sites despite successful preflight check
  Resolved 💬 13 👍 9 #22846
• claude code opus is down
  Resolved 💬 6 👍 11 #22790
• API Error: 500 {"type":"error","error":{"type":"api_error","...
  Resolved 💬 6 👍 11 #22766
• Bun segfault crash after extended session
  Resolved 💬 17 👍 7 #22632
• ReferenceError: classifyHandoffIfNeeded is not defined when Task agent completes
  Resolved 💬 3 👍 11 #22544
• [BUG] Input freezes on Windows when launching Claude Code from certain directories (native installer)
  Resolved 💬 14 👍 7 #22997
• Multiple processes span with 100 %CPU usage in activity monitor
  Resolved 💬 14 👍 7 #22253
• [Bug] Anthropic API Error: Internal Server Error (500)
  Resolved 💬 4 👍 10 #23110
• 500 error on every message
  Resolved 💬 4 👍 10 #22770
• Windows 11: Terminal freezes on startup in 2.1.30/2.1.31 (regression from 2.1.29)
  Resolved 💬 8 👍 8 #23016
• [BUG] Both the web portal and claude code report usage at ~70% but Claude Code reports I have hit my rate limit
  Resolved 💬 2 👍 10 #22441
• [BUG] Claude Code on macOS ignores valid ANTHROPIC_API_KEY environment variable
  Resolved 💬 7 👍 7 #25069

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