Crashes, hangs & freezes
Hard crashes, infinite hangs, unresponsive sessions, and stuck spinners.
10301 related issues · 1183 open · 9118 resolved · peaked at 1463 open (2026-08)
Backlog trend over time
The line shows how many issues in this topic were open at the end of each month, derived by
counting each issue from its creation date until it was closed. First-party data from the
anthropics/claude-code tracker.
All crashes, hangs & freezes issues
Ranked by community engagement (reactions and comments).
- [BUG] Phone verification
- [BUG] IME input causes performance issues and duplicate conversion candidates
- [BUG] API Error: Stream idle timeout - partial response received - multiple time today
- [BUG] [URGENT!!!] Claude Code is hanging / freezing / stuck on heaps of prompts for 5-20minutes or more.
- Feature Request: Option to disable paste text collapse in input field
- Claude.ai MCP servers auto-injected into Claude Code without opt-in — causes OOM crashes on resource-constrained systems
- [BUG] Remote Control: automatic reconnection doesn't work -- connection drops silently with no recovery
- [BUG] Critical memory regression in 2.1.27 - OOM crash on simple input
- [FEATURE] VS Code extension: Stream bash command output in real-time
- [BUG] Unhandled Case [object Object]
- [BUG] Claude Code 2.1.0 crashes on startup - Invalid Version semver parsing error
- [BUG] API Error 400 - Thinking Block Modification Error
- 🚨 4.1 Opus Committed Deliberate Task Fraud in Production Context (CRITICAL)
- Use of native terminal's cursor
- [FEATURE] Add Interactive Shell Support to the Bash Tool via Pseudo-Terminal (PTY)
- Feature Request: Machine to Machine Authentication for Claude Max Subscriptions
- Critical Memory Leak: Claude Code Consumed 129GB RAM and Caused System Freeze
- [BUG] VS Code: "Not responding - try stopping" offers no way to actually stop or recover
- Missing Tool Result Block After Tool Use This error suggests that after a tool use block in the conversation, you did not include the corresponding tool result block, which is required by the API. To resolve this: 1. Ensure that any `tool_use` block is i
- [BUG] Claude Desktop fails to launch on Windows — orphaned Silo / Job Object after app crash, only logoff or reboot recovers (HRESULT 0x80070020 in AppModel-Runtime EventID 215/208)
- [BUG] Terminal left in enhanced keyboard mode after exit — Ctrl-C/Ctrl-D broken
- [BUG] Claude Desktop macOS requires quitting twice (Cmd+Q → wait → system Dock pop-up menu Quit)
- Windows VS Code extension crashes Claude Code with "Error: cannot open _claude_fs_right:<file>. Detail: Unable to resolve filesystem provider with relative file path '_claude_fs_right:<file>'"
- [BUG] Claude Desktop 1.1.3189 severe UI lag and mouse stutter on Windows — performance regression after update
- [BUG] Cowork scheduled tasks ignore "Always allow" folder/tool permissions — prompts reappear every run (macOS)
- [FEATURE] Add a --screen-reader mode for better accessibility with NVDA and JAWS
- [BUG] Can't see Claude's thinking anymore
- [BUG] Claude Code using 100% of cpu and Memory Resources
- [BUG] First user message stays pinned/sticky at the top of the chat panel in VS Code extension
- [BUG] Sessions become unresponsive after upgrade to 2.0.60 (suspected background agent blocking)
- [BUG] Claude Code 2.1.27 freezes after first message - regression from 2.1.25
- [Windows] Desktop app 1.24012.1: fatal GPU-process crash (0x060C201E) via in-app Browser tab; crash leaves MSIX package unlaunchable (appxState=2) until Repair
- [BUG] Critical: Terminal Flickering Causes Complete VSCode Crashes on macOS
- [BUG] Full crash due to a date in the changelog line for 2.1.0
- [BUG] Prompt cache regression in --print --resume since v2.1.69(?): cache_read never grows, ~20x cost increase
- [BUG] I archived my Claude Cowork chats and they are nowhere to be found.
- Recurring crashes: JavaScript Heap Out of Memory while 'thinking'
- Claude Code freezes with 100% CPU during multi-agent task JSON serialization
- [BUG] OAuth token expiration disrupts autonomous workflows – refresh token handling needed
- [BUG] API Error (Connection error.)
- Claude Desktop 1.1.4173 crashes on startup — no window renders, process visible in Task Manager
- [CRITICAL] Context auto-compact stuck at 0% - Tool Unusable
- [BUG] ERROR Invalid Version: 2.1.0 (2026-01-07) /$bunfs/root/claude:813:8909
- [BUG] Claude Max 5x gift subscription auto-canceled after ~1 week — account reverted to Free plan with no user action
- [BUG] Stale `.git/index.lock` files created by CC's background git operations block user git commands
- [BUG] Memory leak in long-running idle Claude Code sessions
- Panic on UTF-8 boundary when processing Chinese characters
- [MODEL] Opus 4.6 continuously stuck in explore and thinking loops (Claude Code)
- High CPU usage (100%+) when Claude Code instances are idle - v2.1.12
- [BUG] Semi-infinite scrolling in terminal
- [BUG] Claude Code v2.1.9 Complete Freeze - 100% CPU, Main Thread Stuck in Infinite Loop (macOS ARM64)
- [BUG] Claude code web hang and still consuming credit
- [BUG] Claude creating file limit filesystem bug on long or many sessions
- [BUG] Cowork UI: Responses not rendering until user types; "working through complex response" hangs indefinitely
- SSE streaming hangs indefinitely (no timeout) + ESC cannot fully cancel (queue auto-restart) — root cause analysis with fix proposals
- Remote control: permission prompts not rendering on mobile app
- [BUG] Rust panic on Korean (UTF-8) input: "byte index is not a char boundary" when processing '필터 적용'
- Stale worktrees are never cleaned up
- [Bug] Claude Code desktop application crashes with unresponsive processes after startup
- /compact fails with 'Conversation too long' when context limit is reached
- 2.1.120 regression: claude --resume / --continue crash with "g9H is not a function"
- CLI crashes with 'Invalid Version' when parsing changelog with date in parentheses
- [BUG] Hanging / Freezing in the middle of work - CPU sample attached
- [claude.ai] Web UI Stability Issues - Lag, Freezes, Crashes
- [BUG] Environment variables from `env` section not passed to MCP servers
- [BUG] Windows (MSIX): update fails with 'Another program is currently using this file' — app unlaunchable until reboot (every update)
- [BUG] Remote Control: AskUserQuestion selections made on mobile not received by CLI — causes infinite wait
- [BUG] API Error: Rate limit reached on Cowork only - account-specific, persists across machines
- Claude Desktop App stuck in login loop with 'Invalid authorization' error
- [Bug] Panic on UTF-8 multibyte character boundary in Japanese text
- [BUG] CC crashes with new release of Nodejs v25
- [iPadOS] App crashes when opening any session in Code tab (v1.260618.0) — main-thread stack overflow in SwiftUI
- Read tool sends requests exceeding 20MB API limit without pre-checking payload size
- v2.1.27 hangs at 100% CPU after first response (v2.1.25 works)
- Bash command timeouts due to shell hangs
- [BUG] Stale .git/index.lock left behind after Bash tool git commands on Windows
- [BUG] CC native on Windows: not really shell aware
- Error: InputValidationError: Write failed due to the following issue: The required parameter `content` is missing
- [BUG] iOS app silently crashes when tapping a Remote Control session to link (Code tab)
- [BUG] Claude Code hangs indefinitely when API streaming connection stalls (no read timeout)
- Unexpected Task Interruption During Code Generation Workflow
- Feature request: Session persistence & reconnection for Remote Control server mode
- [BUG] Claude stops with snapshot error
- Dispatch main conversation permanently offline despite working Cowork tasks
- [BUG] Mouse click to refocus terminal triggers permission prompt unintentionally
- [BUG] Native Claude Code not using system certs on MacOS
- Claude Code consumes 100%+ CPU when idle in terminal
- VSCode/Cursor Instability: Rapid Scrolling and Crash During Extended AI Code Generation
- [BUG] npm install now ships Bun binary (v2.1.126) — npm workaround for non-AVX VPS is dead, no upgrade path
- Remote Control: add permission mode cycling from mobile app
- [BUG] claude crashed in terminal, and i'm getting the error `zsh: command not found: claude` when i try to reopen by running `claude`
- SSH: CC_ENV_EXTRACT_LIST missing SSH_AUTH_SOCK breaks 1Password SSH agent
- [Bug] Claude Code freezes intermittently on Windows Terminal
- [Windows] Desktop app: GPU process crash (exit code 101457950) kills entire app and all running sessions
- [BUG] Claude Desktop persistent blank/white screen on Windows — Cowork unusable, multiple reinstalls have no effect
- [BUG] Conversation compaction intermittently fails or deadlocks chats (claude.ai web/mobile, post–Jan 15 regression)
- [BUG] Bun v1.3.5 crashes on Windows with "integer does not fit in destination type" - prevents installation and startup
- Desktop app MCP Tools hanging for 5-10 minutes then failing.
- v2.1.15 crashes on CPUs without AVX (regression from 2.1.14)
- [BUG]Claude Desktop repeatedly crashes and requires “Advanced Options → Repair” on Windows
- [BUG] Bun v1.3.10 crashes with "panic: incorrect alignment" on Windows 11 ARM64 (v2.1.47)
- [Bug] IDE plugin stuck at "Synthesizing..." state in v2.0.0
- [BUG] Cowork crashes since v1.3036.0 is installed
- Feature Request: Make /buddy a permanent opt-in feature
- [BUG] v2.1.73 causes terminal freeze with yellow search bar in tmux sessions - memory leak related
- CLI hangs at 99% CPU on startup with large session .jsonl files
- [BUG] Claude Code Agent Going Offline During Active Development
- [BUG] [Desktop App] Cowork VM completely broken on Windows 11 Insider (MSIX) - Unresolved EXDEV rename bug in v1.1.4010
- Agent teams should spawn in new tmux window, not split current pane
- [Bug] Claude Code TUI completely freezes on Windows startup without input
- [BUG] Invalid Version
- [BUG] Sub agents context is wiped when the user denies an action
- /rewind hangs the CLI on any session; Ctrl+C does not interrupt
- Feature request: Cancel/interrupt button for Remote Control (mobile)
- [BUG] Claude Code process exited with code 1
- [BUG] v2.1.63 crashes on Alpine Linux (musl): posix_getdents symbol not found
- Claude Code freezes/hangs with no input accepted — 100% write ratio in terminal renderer
- [FEATURE] Let me mark an agent session as completed / dismiss it from the agents view
- Opus 4.6 comprehensive regression: loops, memory loss, ignored instructions - daily professional user report
- [BUG] Claude Code crashes with Bun panic in Visual Studio Code on Windows 11
- [BUG] Crash when editing Markdown files containing Japanese text with box-drawing characters
- [BUG] High Keystroke Latency / Excessive data being sent/logged on keystrokes
- [BUG] Error: Timeout waiting after 1000ms in claude-code CLI (Node.js v20.19.3)
- [Bug] Rewind functionality causes terminal freeze, unable to exit or navigate
- [Bug] Permission prompt disappears after Ctrl+O toggle with concurrent tool calls
- [BUG] Cowork Dispatch not responding on macOS
- Feedback: Significant regression in software design and contextual awareness between versions 1.0.24 and 1.0.61
- [BUG] Claude command intermittently becomes unavailable ("command not found") with ENOTEMPTY errors preventing reinstallation on Ubuntu 24.04
- Resume crashes with "g9H is not a function" — REPL onSessionRestored undefined in 2.1.120
- [BUG] Remote Control (mobile): session silently hangs mid-execution; only local Esc recovers it — no remote unstick mechanism
- [BUG] ESC Key Causes Complete Terminal Freeze in Claude Code
- v2.1.69: Freezes on startup on Windows - mkdirSync EEXIST error loop
- [Bug] Multiple Claude Code instances freeze on macOS due to file locking conflict
- [BUG] "terminal scrolling infinite loop" or "uninterruptible high speed scrolling bug"
- [BUG] /resume not listing sessions in v2.1.30 - sessions-index.json not populated
- Can no longer easily select text to copy and paste
- [BUG] Claude Desktop 1.1.4173 fails to show GUI — @formatjs/intl unhandled promise rejection crashes renderer
- [BUG] VSCode extension 2.0.0 doesn't allow using Bedrock token
- [Bug] Parallel tool calls hang on Bash execution errors
- [FEATURE] Claude Desktop - Archive individual conversations from the sidebar
- [BUG] Phantom 'Generating...' state - UI stuck after task completion, 0 tokens consumed
- Background process termination crashes Claude Code in Docker containers
- Doesn't start extension in Cursor when cant find historic session.
- CLI Hangs/Terminates Silently Without Error Output
- [BUG] Compact Conversation Infinite Loop
- [BUG] Bug Report - Claude Code 2.1.27 hangs on startup
- [BUG] Agent-team teammate pane crashes with "<Box> can't be nested inside <Text>" when ※ recap renders inline markdown code spans
- [BUG] Auto mode blocks all Bash actions with endless retries when Opus 4.8 classifier is temporarily unavailable
- [BUG] Claude code crashes
- [BUG] `_claude_fs_right:/Users...` URL crashes rust-analyzer
- [BUG] Claude Cowork: `local_` prefixed session IDs rejected by API UUID validation
- [Bug] Memory Leak When Initializing Sub-Agent Orchestration
- [BUG] Cowork — GitHub connector unusable: OAuth DCR unsupported, UI shows misleading state, Disconnect button dead
- [BUG] Claude Code v2.1.27 gets stuck on the first message, with very high memory usage.
- [Bug] ! CRITICAL ! Input Unresponsive on Windows After v1.0.113
- [BUG] Plan mode: cannot scroll to reach Claude's answers rendered above the plan box
- [BUG] 1.1617.0 (8d6345): New Cowork sessions crash with "exited with code 1" - /doctor and /bug non-functional
- [BUG] Remote Control: "Always allow" permission from Android app breaks tool calls
- Claude Code crashes with ACCESS_VIOLATION on Windows ARM64
- Feature Request: Add model selection support for custom commands (similar to subagents)
- [BUG] Claude 0.2.91+ crashes with "ERROR Could not locate the bindings file."
- Bundled Bun binary lacks AVX baseline support — crashes on non-AVX CPUs
- [BUG] Thinking and not coding for more than 10 minutes for simple tasks with oppus 4.6 - then freezes
- [Bug] Claude Code hangs indefinitely during processing with no error output
- [BUG] API Error: 400. Each `tool_use` block must have a corresponding `tool_result` block in the next
- [BUG] Claude Desktop MSIX: CIG (MicrosoftSignedOnly) + vendor-signed vk_swiftshader.dll kills GPU process on every browser preview (0x060C201E)
- [Bug] Claude in Chrome Native Host crashes on Windows 11 - Bun internal assertion failure
- [BUG] Claude stuck at 0 tokens
- Image Processing Failure: API Rejects Unrelated Context Image
- [BUG] ClaudeCode v1.0.45 hangs when CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC is set
- Claude Code 2.1.243 segfaults on launch (CachyOS/glibc 2.44) — 2.1.241 unaffected
- [BUG] Claude Code 2.1.69 freezes on startup in specific project directories on Windows
- Terminal renderer CPU spin: 100% CPU with 625K writes/0 blits on large session
- [Bug] CLI hangs mid-conversation requiring session restart
- Anthropic API Unresponsive: Sudden Conversation Termination Without Error
- [BUG] Can't Authenticate With Notion MCP
- Repeated Bun v1.3.5 segfaults -- 78 crashes, root cause identified (Windows + WSL)
- [BUG] Incredibly slow performance
- [Desktop] iOS Simulator panel: claude-ios-sim crash-loops in Metal/CoreImage on macOS 27.0 beta — panel stuck on 'Attach a simulator'
- VS Code: long user prompt cannot be collapsed (expand/collapse toggle unresponsive)
- [BUG] Can't upgrade Max 5x → Max 20x: payment fails on every attempt, support unresponsive
- [BUG] Bun has crashed. This indicates a bug in Bun, not your code.
- Attaching to a stopped/idle background agent crashes the worker with contradictory "currently running as a background agent" error
- [BUG] Remote Control: AskUserQuestion shows 'awaiting input' on mobile but question and answer UI are completely missing
- [Bug] Claude Code hangs unresponsively on macOS M1, requires terminal force-close
- Claude Desktop App: Cowork tab stuck on 'Sending request' - UUID validation error
- [BUG] Claude Cowork "API Error: Connection error"
- [BUG] VS Code Extension OAuth Auth Loop on Windows — Extension Repeatedly Loses Authentication Despite Successful Browser Authorization
- [BUG] /api/oauth/usage endpoint aggressively rate limits, making usage monitoring unusable
- Compaction fails with 'Conversation too long' at 48% context usage (Opus 4.6)
- Claude Code freezes: static spinner, unresponsive input, ignores SIGTERM
- [BUG] Sub-agents can't create sub-sub-agents, even with Task tool access
- [BUG] Claude Code Configuration File Corruption
- [FEATURE] Desktop: allow multiple simultaneous spellchecker languages
- [BUG] claude doctor hangs indefinitely, uses 100% CPU, and soft locks terminal session
- Node.js EPIPE Error on Bash Command Execution
- Claude CLI Hangs or Becomes Unresponsive in WSL (Intermittent Issue)
- [BUG] Tool-use markup generated as "court" instead of "antml:invoke" (malformed/parse error, tool not executed)
- [BUG] claude auth login WSL2 stdin does not accept OAuth code — cannot authenticate to Claude Max
- [BUG] Plugins not loading