Claude Code v2.1.227

Released Aug 10, 2026 (19 days ago).

"References this build" means the issue body mentions running 2.1.227 (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 v2.1.227

Ranked by community engagement (reactions and comments).

• [Regression, Windows+macOS] Cross-session messaging silently broken since CCD 2.1.224+ — messages dropped, recipient sessions wedged 15-20 min (hadFirstResponse=false); fixed in 2.1.237 for some installs, stable channel still affected
  Resolved 💬 41 👍 9 #86012
• Desktop app (Windows): cross-session messages silently dropped — held for an approval the UI never offers, then expire (~5 min); regression since app 1.28929.0
  Resolved 💬 26 👍 1 #86298
• Cross-session messages are delivered but never trigger the recipient's turn (desktop app, Windows)
  Open 💬 13 👍 2 #86212
• [BUG] Windows Desktop 2.1.227: cross-session send_message to a paused session is never delivered to the model, leaving the session in a permanent phantom turn
  Resolved 💬 10 👍 2 #86138
• MCP-originated cross-session sends (`ccd_session_mgmt send_message`) never deliver — payload lost in app layer; receiving session UI hangs on "phantom" turn
  Resolved 💬 7 👍 1 #86498
• [BUG] Desktop app: turns started by session resume or inter-session message hang with no first token, watchdog kills after ~980s (no_response) — spiked after auto-update 1.26832.0 → 1.28929.0
  Resolved 💬 3 👍 2 #86344
• Desktop Browser pane: allow user-approved local hostnames (hosts-file aliases) as trusted preview origins — currently all subresources blocked with ERR_BLOCKED_BY_CLIENT
  Resolved 💬 3 👍 2 #86228
• Cross-session send_message delivers to the target session's queue but never triggers a responding turn (regression in desktop 1.28929.0 / CC runtime 2.1.227, still broken in 2.1.231)
  Resolved 💬 5 👍 1 #86385
• [Feature Request] Add option to disable or customize animated spinners
  Open 💬 1 👍 2 #88265
• send_message (cross-session) never delivers and leaves the target session hung on an empty turn
  Open 💬 4 👍 1 #86279
• [BUG] Windows: CoworkVMService can never arm its own recovery actions ("Access is denied" at every start) — service death becomes a silent claude.exe hang with no crash dump (root cause of #59794 and #66849, both closed stale)
  Open 💬 7 #85840
• [BUG] Image Inputs via Read Tool or @ Reference Consume 7–10× More Tokens with On-Prem LLMs
  Open 💬 3 👍 1 #86595
• Browser pane: service-worker registration fails — script fetch never leaves the app
  Open 💬 3 👍 1 #86367
• [BUG] Playwright MCP browser cannot traverse the session's mandatory HTTPS_PROXY egress proxy (100% ERR_CONNECTION_RESET, even with explicit --proxy-server)
  Open 💬 2 👍 1 #85757
• [BUG] Claude Desktop (Windows, MSIX) fails to launch after spontaneous close — "reinstall required" dialog, Repair does not fix it
  Resolved 💬 4 #88818
• [BUG] Orphaned temp_<epoch-ms> folders accumulate under ~/.claude/plugins/marketplaces
  Open 💬 1 👍 1 #87778
• [Bug] Worktree isolation blocks all Bash commands due to parser abort in bash-command classifier
  Open 💬 4 #86340
• [BUG] Login with a paranoid captcha
  Open 💬 1 👍 1 #86161
• [Bug] Agent accesses production data without explicit permissions
  Resolved 💬 1 👍 1 #85835
• [BUG] Terminal title is blanked on exit instead of restored, corrupting tmux-resurrect saves
  Open 💬 1 👍 1 #85776
• Receiver is never notified when a held cross-session message expires — the message is abandoned, not denied, and nobody downstream learns it existed
  Open 💬 1 👍 1 #85679
• Held-then-approved cross-session messages arrive with no marker — receiver cannot tell it was gated, and reports the hold never happened
  Open 💬 1 👍 1 #85678
• Windows desktop app (MSIX) wedges on every auto-update - crash-loops until reboot, 3 reboots in one day
  Open 💬 3 #89692
• [BUG] Plan mode permanently corrupts prompt color default forever
  Open 💬 0 👍 1 #88079
• Endless SecurityAgent prompt stack for "Claude Code-credentials": credential rewrite creates keychain partition mismatch, "Always Allow" can never persist (behavior persists after #41026 was closed as resolved)
  Open 💬 3 #87348
• [BUG] Cross-session message written to target transcript but excluded from model's context
  Open 💬 3 #87323
• [BUG] Queued message is dequeued while a tool call is still in flight and silently discarded — no user record, no UI signal (2.1.227 desktop; distinct from the turn-end variant #85603)
  Open 💬 0 👍 1 #86614
• Desktop app: "Open in Browser panel" context menu item always opens system default browser instead of the Browser panel
  Open 💬 0 👍 1 #86484
• [BUG] Desktop Browser pane: a site on the "Allowed sites" list still raises a permission card on every tool call in Auto mode, claiming site permissions are disabled
  Resolved 💬 3 #86384
• Bash tool: "wc" via command substitution fails with "command not found" inside a for-loop with 2+ items
  Open 💬 3 #86346

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