Claude Code Just Fixed the Streaming Crash Th

You’re in the middle of a complex refactor. Claude Code is streaming a 500-line response. Then — poof — half of it vanishes. Or it prints twice. Or the terminal crashes entirely.

That was v2.1.228. v2.1.229 fixes it.

Released 6 hours ago, this patch tackles the streaming reliability issues that have been driving developers crazy, plus a stack of Windows crashes, Vertex/Bedrock disconnects, and Remote Control bugs. If you’ve ever lost work to a mid-stream glitch, update now.

The Headline Fix: Streaming Finally Works

Long responses partly disappearing while streaming and being printed twice in the terminal — fixed.

This was the most reported regression. You’d watch the response build, then chunks would vanish or duplicate. The root cause was a race condition in the terminal renderer when handling high-volume streaming output. v2.1.229 rewrites the stream buffer flush logic so every chunk arrives exactly once, in order.

RangeError crash when a progress bar or markdown table rendered in a very narrow terminal — fixed.

If you split your terminal pane too thin, the whole process crashed. Could also crash claude --continue/--resume at startup. Now it gracefully handles narrow viewports.

Windows Users: Your Crashes Are Gone

Crash on Windows when a tool call referenced an extended-length (\\?\) or UNC path — fixed.

Windows paths longer than 260 chars use the \\?\ prefix. UNC paths (\\server\share) are common on corporate networks. Both triggered unhandled exceptions. Now they resolve correctly.

File-watcher handle leak after atomic file replacements — fixed.

Uncaught error on Windows when scheduled-tasks watcher failed on network/virtual filesystems — fixed.

If you work on network drives or WSL-mounted volumes, the file watcher would silently leak handles until the OS killed the process. That’s resolved.

Vertex AI & Bedrock: No More Mid-Thinking Disconnects

SSE keepalive pings to gateway streaming responses during long thinking pauses — added.

This is huge for enterprise users. When Claude thinks for 2+ minutes (complex reasoning, large context), Vertex AI and Bedrock gateways would idle-timeout the connection. The session dies, you lose context, you start over.

Now the gateway sends keepalive pings during thinking. Your 10-minute reasoning session stays alive.

Vertex AI credential handling: expired/missing Google Cloud credentials now fail within seconds instead of retrying for minutes — improved.

No more staring at a spinner wondering if it’s working.

Remote Control Gets Reliable

Issue	Fixed?
Stuck working spinner after slash command on laptop	✅
`/resume` while connected leaking conversation title/history	✅
Cross-session messaging starting without inbox on first session	✅
`ListAgents` now marks disconnected sessions `offline`, labels cloud sessions `cloud`	✅
`claude remote-control --continue` documented for resuming most recent session	✅

Remote Control is finally usable for daily cross-machine workflows.

Self-Hosted Runners: Production-Ready

Server-supplied hook support now matches managed-environment behavior
Repository preparation no longer hangs on Git Credential Manager prompts — fails fast with clear error
Managed MCP servers deployed via managed-mcp.json no longer crash startup — skipped with warning
Windows startup requires explicit --base-dir — no default checkout directory (prevents accidental writes)
Workflow fan-out staggering — sibling agents read cached prompt prefix instead of re-paying (CLAUDE_CODE_WORKFLOW_PREFIX_STAGGER_MS=0 disables)

If you run self-hosted runners for CI/CD, this release moves them from “experimental” to “production viable.”

Plugin Marketplace: Dynamic Without Restarts

Plugin marketplace command sources — a local command (e.g. an IDE) prints the plugin directory, re-resolved each session, applied without restart. mode: "link" uses it in place.

This means your IDE can dynamically inject plugins per-project, per-session, with zero config reloads.

VS Code Extension: Quality of Life

Session groups in sidebar — right-click to create, rename, delete; Cmd/Ctrl- or Shift-click to move multiple sessions
Resizable /btw side-question panel — drag boundary in both layouts
“Report a problem” and /bug open built-in feedback dialog — no more retired survey links

The “Thank God” Fixes

Bug	Impact
Auto mode failing every tool call when `CLAUDE_CODE_ATTRIBUTION_HEADER` disabled	✅ Fixed
`/model` rejecting Sonnet/Opus 1M for claude.ai subscribers with custom `ANTHROPIC_BASE_URL`	✅ Fixed
MCP OAuth with strict auth servers (uses `127.0.0.1` not `localhost`)	✅ Fixed
One-shot `claude plugin` commands leaving stray liveness files	✅ Fixed
Dynamic workflows in CPU-limited containers using host core count	✅ Fixed
SDK/`stream-json` 400 error on whitespace-only messages	✅ Fixed
Conversations exceeding 32MB request limit retrying compaction endlessly	✅ Fixed — now fails once with clear message
OpenTelemetry export from Claude Desktop rejected by gateway	✅ Fixed
`/commit-push-pr` no longer auto-approves dangerous git flags (`--force`, `--amend`, `--no-verify`)	✅ Fixed
Sandbox IPv6 literals now bracketed (`[::1]:443`), ambiguous spellings fail-closed	✅ Fixed

How to Update

# If installed via npm
npm update -g @anthropic-ai/claude-code

# If installed via Homebrew
brew upgrade claude-code

# Verify
claude --version
# Should show 2.1.229

Bottom Line

v2.1.229 isn’t a feature release — it’s a reliability release. The kind that matters when you’re debugging at 2 AM and the tool just works.

If you’ve been burned by streaming glitches, Windows path crashes, or Vertex timeouts, this is the update you’ve been waiting for.

Full changelog: github.com/anthropics/claude-code/releases/tag/v2.1.229

Updated August 13, 2026 — covers v2.1.229 released August 12, 2026

Claude Code Just Fixed the Streaming Crash That Stole Your Work