Claude Code v2.1.220

Released Jul 25, 2026 (1 month ago).

"References this build" means the issue body mentions running 2.1.220 (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 v2.1.220

Ranked by community engagement (reactions and comments).

• [BUG] Sonnet 5 writes Korean tool-call parameters as \uXXXX escapes and mis-spells the hex, corrupting Hangul (100% corruption when escape-writing engages; likely root cause of #80009 / #78996)
  Open 💬 5 👍 131 #83033
• [FEATURE] Desktop composer reserves a full-height right gutter, costing ~4 characters per wrapped line
  Open 💬 0 👍 26 #81570
• [BUG] Account email (PII) is injected into the model's system prompt without consent, disclosure,
  Open 💬 5 👍 23 #81138
• [BUG] Possible Claude Max usage bug: session limit consumed without using
  Resolved 💬 31 👍 8 #82506
• Gateway model discovery never fires when using apiKeyHelper (works with ANTHROPIC_AUTH_TOKEN)
  Resolved 💬 2 👍 12 #83515
• [BUG] Apps gateway serves Claude Desktop an `otlpEndpoint` pointing at its own bearer-gated OTLP ingest but no `otlpHeaders`, so every Desktop telemetry flush is rejected with `missing_token`
  Open 💬 16 👍 7 #82092
• Fast mode is excluded from subscription plans, so Max capacity can't cover the one feature I'd spend it on
  Open 💬 0 👍 12 #83302
• [BUG] MCP OAuth redirect_uri hardcodes the `localhost` hostname — breaks IdPs that allowlist only `127.0.0.1`
  Resolved 💬 4 👍 10 #82096
• Repeated multi-minute 'Waiting for API response … check your network' stalls when the network is provably fine (33ms RTT to api.anthropic.com)
  Open 💬 2 👍 10 #82155
• [BUG] CVP approved org still blocked by cyber safeguards — org ID confirmed matching, appeal form shows no fields
  Open 💬 17 👍 4 #84689
• [Bug] Agent tool model parameter ignored; subagents inherit session/settings model instead of override
  Open 💬 1 👍 9 #83920
• [Feature Request] Make /code-review command agent-invocable
  Open 💬 1 👍 9 #81584
• Typed input queued mid-turn is silently dropped at turn end (end_turn, no Escape involved) -- interactive TUI
  Open 💬 23 👍 1 #85603
• [BUG] Browser pane blocks same-origin subresources with ERR_BLOCKED_BY_CLIENT for local dev domains mapped to 127.0.0.1 via /etc/hosts — page renders blank
  Open 💬 6 👍 5 #86362
• Opus 5.0 nerfed: terrible quality and does not deliver work even after 5 retries
  Open 💬 9 👍 4 #82162
• [BUG] Links open twice in Windows Terminal: Claude Code opens OSC 8 regions the terminal already activates
  Open 💬 5 👍 5 #82582
• WebSearch always returns HTTP 400 when session effort is xhigh/max on Opus 5 (regression from v2.1.219 default flip)
  Resolved 💬 3 👍 5 #83364
• [BUG] Organization-shared cloud environments can't use Custom network access / Allowed domains, contrary to documented field parity
  Open 💬 0 👍 6 #82284
• [Feature Request] Add scoped rate limit data to statusline input JSON payload
  Open 💬 3 👍 5 #81940
• [BUG] macOS: sleep inhibitor SIGKILLs its caffeinate before spawning the replacement — Mac idle-sleeps mid-task once the display is off
  Open 💬 3 👍 5 #81832
• False 'auto-update failed' notification when already on latest version
  Open 💬 5 👍 4 #81898
• Claude will frequently "flip" to role playing as an abuser/narcicist in longer conversations
  Open 💬 14 👍 1 #81463
• [MODEL] Undesirable verbose comments due to system instruction
  Open 💬 0 👍 5 #82032
• Stale "auto-update failed" status message is misleading and can't be cleared
  Open 💬 5 👍 3 #82408
• [BUG] [SECURITY] Claude for Chrome OAuth grant remains authenticated after global logout and is invisible to session controls
  Open 💬 14 #82074
• [BUG] Fable 5 gated behind "Requires usage credits" under CLAUDE_CODE_OAUTH_TOKEN auth — client discards subscriptionType it already has
  Open 💬 2 👍 4 #81350
• [BUG] Opus 4.8 and 5.0 is consistently broken and unusable.
  Open 💬 13 #89197
• statusLine always reports the main session, even when a subagent or teammate transcript is focused
  Open 💬 1 👍 4 #83512
• Default model in settings.json ("claude-fable-5[1m]") is not honored at session start; /model does not reliably switch either
  Open 💬 10 👍 1 #82466
• [BUG][REGRESSION] model:/effort: frontmatter override silently broken for BOTH commands/*.md and skills/SKILL.md (v2.1.220, worked on v2.1.197)
  Open 💬 4 👍 3 #81318

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