Claude Code v2.1.197
Released Jun 30, 2026 (2 months ago).
⚠ Elevated report volume. This build drew 332 issue reports —
more than double the typical release (160 median). That can mean a regression, or simply
that many users happened to be on this build. Skim the reports below before deciding to upgrade.
332 issues reference this build
139 still open
193 resolved (58%)
"References this build" means the issue body mentions running 2.1.197 (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 v2.1.197
Ranked by community engagement (reactions and comments).
- [BUG] Claude 4.7, 4.8, 5.0, and Fable increasingly default to repetitive rhetorical tics and often struggle to produce coherent prose despite explicit style instructions
- [Bug] Advisor with Fable 5 returns "advisor unavailable" error
- Worktree sessions reuse an existing worktree directory from a previous session instead of creating a fresh one
- [BUG] Fable 5 safeguards repeatedly flag benign messages in a legitimate anti-fraud (T&S) session — forced fallback to Opus 4.8
- VS Code: long user prompt cannot be collapsed (expand/collapse toggle unresponsive)
- Segfault regression at 2.1.242 on glibc 2.44 (Arch) — distinct from closed #62747
- macOS sandbox unusable: Seatbelt profile passed inline via 'sandbox-exec -p' exceeds ARG_MAX with many git worktrees
- Feature request: allow Remote Control when ANTHROPIC_BASE_URL is a transparent local proxy to api.anthropic.com
- [BUG] settings.json or settings.local.json do NOT suppress permission prompts
- Left-arrow (←) triggers session/answer navigation during text editing — too easy to trigger accidentally, no confirmation
- [BUG] Mouse-tracking modes left enabled after session exit — bare shell floods with SGR sequences on mouse move (macOS Terminal.app)
- [BUG] Background workers crash-loop under memory pressure but CLI only reports "exit 1 before init"
- Login OAuth URL wraps in WebStorm terminal causing "Missing state parameter" error
- [BUG] 'Thinking' block does not expand in Claude Code for VSCode extension starting from v2.1.197
- [FEATURE] Configurable threshold or opt-out for the recurring weekly-limit usage warning
- Remote SSH sessions: 'Reattach failed: auth error' after CLI version bump abandons in-flight session; stale helper servers accumulate
- [BUG] Persistent 5-hour reset loop / 100% usage exhaustion with zero activity
- [Bug] Scheduled routine consumes entire token quota in single execution without safeguards
- [Bug] Agent View "last changed" timestamp reflects file mtime instead of actual conversation activity
- plugin install fails for git-subdir sources pinned to a commit SHA ("fatal: Remote branch <sha> not found in upstream origin")
- Remote Control: no host provenance in the session UI — can't tell which machine runs a session (add hostname to session info + disconnect message)
- [MODEL] New safeguards are unreasonably strict and prevents me from working on reasonable use cases + typeform for exemption not working
- [Feature Request] Add option to suppress file diff output in verbose logging
- [Bug] Uncontrolled recursive agent spawning causes excessive API usage and costs
- [FEATURE] Add a supported way to disable the ReportFindings tool
- Artifacts containing mermaid diagrams cannot be shared publicly
- [BUG] Prompt cache invalidated by rewrites of messages in long sessions
- [BUG] headersHelper not re-run on mid-session 401 (2.1.197): client falls into OAuth /register fallback and stays wedged until manual /mcp reconnect
- [BUG] Desktop + 3P gateway: Fable 5 1M selection is normalized to bare model id on save — new sessions silently fall back to the 200K row
- [Bug] Fable 5 model unavailable despite being selectable for Claude Max users
Changelog
What's changed
- Introducing Claude Sonnet 5: now the default model in Claude Code, with a native 1M-token context window and promotional pricing of $2/$10 per Mtok through August 31. Update to version 2.1.197 for access. https://www.anthropic.com/news/claude-sonnet-5