Claude Code v2.1.56

Released Feb 25, 2026 (6 months ago).

"References this build" means the issue body mentions running 2.1.56 (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 v2.1.56

Ranked by community engagement (reactions and comments).

• Remote control session fails to resync after connection drop
  Open 💬 18 👍 52 #28571
• [BUG] Remote Control: AskUserQuestion selections made on mobile not received by CLI — causes infinite wait
  Open 💬 19 👍 26 #28508
• [Bug] API Error 500 on every prompt - Claude Max completely unusable
  Resolved 💬 15 👍 15 #28614
• [BUG] Claude Chrome extension renders black screen with no tool access in Vivaldi browser (Linux)
  Resolved 💬 13 👍 12 #34062
• [Bug] Anthropic API Error: 500 Internal Server Error with intermittent failures
  Resolved 💬 4 👍 11 #28623
• [BUG] remote-control command not available on Pro account
  Resolved 💬 16 👍 6 #28471
• Claude API" displayed instead of "Max" plan, and Remote Control unavailable on Max subscription
  Resolved 💬 10 👍 5 #28501
• [BUG] ECONNRESET issues
  Resolved 💬 18 👍 2 #28557
• Subagents prompt for permission on every tool call starting v2.1.56
  Resolved 💬 5 👍 6 #28584
• [BUG] Standalone CLI binary missing seccomp binaries — /doctor reports "seccomp not available"
  Resolved 💬 2 👍 7 #28576
• Cannot uninstall plugin: enabledPlugins false ignored, plugin re-installs every session
  Resolved 💬 7 👍 5 #28554
• [BUG] API Error: 500
  Resolved 💬 6 👍 5 #28604
• [Bug] Anthropic API Error: Internal Server Error (500)
  Resolved 💬 10 👍 3 #28654
• [BUG] API Error 500 - Internal server error
  Resolved 💬 7 👍 4 #28589
• [Bug] Anthropic API Error: Internal Server Error (500)
  Resolved 💬 3 👍 5 #28613
• [BUG] `AskUserQuestion` Steals Focus and Triggers Unintended Selection
  Resolved 💬 4 👍 4 #28722
• [BUG] keep getting API Error: 500 on claude code
  Resolved 💬 4 👍 4 #28606
• [BUG] There is a serious issues with Claude Code AI - Can't switch accounts
  Resolved 💬 4 👍 4 #28585
• [Bug] Anthropic API Error: Internal server error (500)
  Resolved 💬 14 #28608
• [Bug] Anthropic API Error: Internal Server Error (500)
  Resolved 💬 5 👍 3 #28597
• [Bug] Custom output styles do not strip conciseness instructions — server-side feature flags bypass exclusion logic
  Resolved 💬 7 👍 2 #31266
• [BUG] Held arrow keys produce raw escape sequences in iTerm2 (kitty keyboard protocol repeat events not handled)
  Resolved 💬 7 👍 2 #28518
• [Bug] Anthropic API Error: Internal Server Error (500)
  Resolved 💬 3 👍 3 #28596
• Splash screen auto-dismisses too quickly — used to persist until user input
  Resolved 💬 3 👍 3 #28490
• [BUG] API Error: 500 on running prompt - Claude Max completely unusable
  Resolved 💬 8 👍 1 #47459
• "API Error: 400 due to tool use concurrency issues" — Conversation permanently broken after context compaction
  Resolved 💬 8 👍 1 #37452
• [MODEL] Opus adds unnecessary 2>/dev/null to Bash commands, silently swallowing errors
  Resolved 💬 5 👍 2 #28466
• [Bug] Anthropic API Error: Internal Server Error (500)
  Resolved 💬 7 👍 1 #28615
• [Bug] /feedback command silently fails; broken for 5+ months while team directs users to it
  Resolved 💬 6 👍 1 #46531
• macOS Keychain: security -i 4096-byte line buffer causes credential corruption with MCP OAuth plugins
  Resolved 💬 6 👍 1 #28901

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