Claude Code v2.1.241

Released Aug 23, 2026 (7 days ago).

"References this build" means the issue body mentions running 2.1.241 (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 v2.1.241

Ranked by community engagement (reactions and comments).

• [BUG] 2.1.243 Segmentation fault
  Resolved 💬 31 👍 20 #89360
• Claude Code 2.1.243 segfaults on launch (CachyOS/glibc 2.44) — 2.1.241 unaffected
  Open 💬 7 👍 17 #89412
• 2.1.243 native build segfaults instantly on startup: interposed free() crashes on free(NULL) from glibc 2.44 newlocale
  Open 💬 3 👍 13 #89369
• [BUG] Claude Code 2.1.243 immediately segfaults on Arch Linux x86_64
  Open 💬 11 👍 10 #89393
• [Bug] Claude Code 2.1.243 crashes with SIGSEGV on startup (null pointer dereference)
  Open 💬 5 👍 12 #89390
• SIGSEGV on startup in v2.1.242+ on Linux (glibc 2.44, x86-64)
  Open 💬 5 👍 6 #89421
• [Bug] Version 2.1.243 fails to launch on multiple machines, autoupdate causes regression
  Open 💬 6 👍 5 #89408
• [BUG] v2.1.243 native binary segfaults on startup — NULL deref in free() called from __newlocale
  Open 💬 2 👍 6 #89419
• [BUG] terminated by signal SIGSEGV (Address boundary error)
  Open 💬 5 👍 5 #89367
• [BUG] Segment Fault
  Open 💬 5 👍 4 #89368
• [BUG] 2.1.243 segfaults on startup - glibc 2.44 / Bun runtime crash in newlocale()
  Resolved 💬 7 👍 1 #89449
• [BUG] Windows Desktop app 1.37937 (2026-08-25 update): slash autocomplete blank, then first-position-only / single-command, chip styling gone
  Open 💬 3 👍 2 #89628
• [BUG] No cofirmation on left arrow press before switching to agent view
  Open 💬 4 👍 1 #89184
• Auto mode enabled by default on fresh launch (2.1.241), contradicting `tengu_auto_mode_default_on: false`
  Open 💬 0 👍 2 #89176
• [Bug] Anthropic API Error: 529 Overloaded - Max Retries Exceeded
  Resolved 💬 3 👍 1 #89156
• [Bug] Anthropic API Error: 529 Overloaded
  Open 💬 0 👍 2 #89145
• OTel logs stop exporting for specific mature/resumed Claude Code sessions while metrics continue
  Open 💬 2 👍 1 #89406
• [BUG] Path-scoped rules never match outside the project root, making the auto-memory directory unreachable
  Open 💬 5 #88945
• [Bug] Session management: /exit lists sessions instead of terminating, duplicate session forks unmanageable
  Open 💬 4 #89586
• [BUG] API Error: 400 reasoning `encrypted_content` was not issued to this caller
  Open 💬 4 #89459
• [MODEL] Rules that constrain or halt work stop binding, while rules that expand work continue to bind
  Open 💬 4 #89244
• remoteControlAtStartup silently no-ops when OAuth is unhealthy at session start — never re-evaluated, session invisible to ListAgents for its whole lifetime
  Open 💬 4 #88951
• [Bug] Content Safety Filter Incorrectly Flags Cybersecurity Educational Material
  Open 💬 0 👍 1 #90810
• Project-level .claude/rules/ symlinks (files and directories) are never loaded — neither at startup nor via paths: trigger (2.1.241, 2.1.251)
  Open 💬 0 👍 1 #90523
• [BUG] Prompt suggestions send a second full-context model call per turn, ~doubling token usage
  Open 💬 0 👍 1 #89659
• 2.1.243 SIGSEGV on startup (glibc 2.44, Arch) — self-heal to 2.1.241 worked, adding correlated repro
  Open 💬 3 #89523
• claude --version segfaults (SIGSEGV) immediately on 2.1.243 — 2.1.241 works fine on same system
  Open 💬 0 👍 1 #89484
• [Bug] CLI initialization fails on Linux Arch with Hyprland/Wayland
  Open 💬 0 👍 1 #89456
• Startup SIGILL in 2.1.241 (Bun v1.4.0 fdb5e06cc) — 71% of launches; 2.1.243 (Bun 19bc277a0) is clean in 17/17
  Open 💬 0 👍 1 #89437
• [Bug] Anthropic API Error: Overly aggressive [bio] classifier hard-refusing legitimate penetration-testing instructions
  Open 💬 0 👍 1 #89407

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