Claude Code v2.1.31

Released Feb 4, 2026 (6 months ago).

221 issues reference this build

4 still open

217 resolved (98%)

"References this build" means the issue body mentions running 2.1.31 (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 v2.1.31

Ranked by community engagement (reactions and comments).

[BUG] macOS sandbox blocks Security.framework TLS verification, breaking Go binaries (gh, terraform, etc.)
Open 💬 8 👍 65 #23416
[BUG] /resume is broken — session history inaccessible since v2.1.31 (3 root causes identified)
Resolved 💬 17 👍 60 #26123
/compact fails with 'Conversation too long' when context limit is reached
Resolved 💬 21 👍 29 #23047
[Bug] TypeError in insights command: Object.keys() called on undefined value
Resolved 💬 16 👍 25 #23138
[Bug] Claude Code TUI completely freezes on Windows startup without input
Open 💬 11 👍 23 #22970
[Bug] File autocomplete suggestions disappear when navigating subdirectories with @ syntax
Open 💬 5 👍 19 #23287
[BUG] CLAUDE.md/memory file edits show "Writing memory" without diff - cannot see what changed
Resolved 💬 12 👍 12 #23176
[BUG] Repeated API 500 "Internal server error" during single Claude Code session (3 occurrences)
Resolved 💬 13 👍 9 #23120
[BUG] SessionStart hooks break stdin on Windows Terminal
Resolved 💬 19 👍 7 #23083
[BUG] sessions-index.json stops being updated after v2.1.31 — new sessions invisible to /resume
Resolved 💬 11 👍 9 #23614
User interrupt during streaming can freeze whitespace-only text block into history, causing persistent 400 errors
Resolved 💬 15 👍 7 #23142
[BUG] Memory saved to undocumented MEMORY.md instead of CLAUDE.md
Resolved 💬 6 👍 9 #23341
Claude in Chrome Extension Not Connecting on Windows 11
Resolved 💬 9 👍 8 #23218
[BUG] Named sessions not appearing in /resume picker
Resolved 💬 6 👍 9 #23061
Bug: HTTP MCP client ignores no_proxy environment variable
Resolved 💬 5 👍 9 #23344
[Bug] Anthropic API Error: Internal Server Error (500)
Resolved 💬 10 👍 7 #23132
[BUG] Ctrl+V in /resume conflicts with Windows paste - cannot be rebound
Resolved 💬 9 👍 6 #23146
[BUG] /feedback cancellation upon "N" symbol
Resolved 💬 6 👍 7 #23080
Claude Code excessive limits usage in recent updates. Limits have either been reduced, or Claude Code is incorrectly counting tokens
Resolved 💬 7 👍 6 #23318
claude resume shows empty list + Feature request: session naming
Resolved 💬 7 👍 5 #23275
[BUG] Getting incorrect "exceeded the 32000 output token maximum"
Resolved 💬 9 👍 4 #23553
[Bug] Anthropic API Error: Internal server error (500)
Resolved 💬 6 👍 5 #23127
[BUG] CLAUDE.md edits show collapsed "memory" UI instead of inline diffs like other files
Resolved 💬 7 👍 4 #23210
[Bug] classifyHandoffIfNeeded error affects BUILT-IN agents (Explore, Plan) - not just custom subagents
Resolved 💬 9 👍 3 #23307
api Errors: 500
Resolved 💬 15 👍 1 #23126
Claude-in-Chrome MCP: extension executes but CLI receives 'not connected' error (Windows)
Resolved 💬 15 👍 1 #23082
[Bug] Session resume with -c/-r flags causes input to freeze
Resolved 💬 7 👍 3 #23338
Bug: /resume command shows incomplete session list
Resolved 💬 3 👍 4 #23302
[Bug] Subagent Skills Leak into Main Context After Compaction - extremely costly bug that breaks everything
Resolved 💬 9 👍 2 #23257
[BUG] /feedback command exits prematurely saying "feedback canceled"
Resolved 💬 6 👍 3 #22971

Changelog

What's changed

Added session resume hint on exit, showing how to continue your conversation later
Added support for full-width (zenkaku) space input from Japanese IME in checkbox selection
Fixed PDF too large errors permanently locking up sessions, requiring users to start a new conversation
Fixed bash commands incorrectly reporting failure with "Read-only file system" errors when sandbox mode was enabled
Fixed a crash that made sessions unusable after entering plan mode when project config in ~/.claude.json was missing default fields
Fixed temperatureOverride being silently ignored in the streaming API path, causing all streaming requests to use the default temperature (1) regardless of the configured override
Fixed LSP shutdown/exit compatibility with strict language servers that reject null params
Improved system prompts to more clearly guide the model toward using dedicated tools (Read, Edit, Glob, Grep) instead of bash equivalents (cat, sed, grep, find), reducing unnecessary bash command usage
Improved PDF and request size error messages to show actual limits (100 pages, 20MB)
Reduced layout jitter in the terminal when the spinner appears and disappears during streaming
Removed misleading Anthropic API pricing from model selector for third-party provider (Bedrock, Vertex, Foundry) users