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v2.1.198 Claude Code Release Notes

Jul 1, 2026
Claude's Analysisby Sonnet 5
Full Analysis

Background agents now auto-commit, push, and open draft PRs; Explore agent upgrades from Haiku to Opus. 18 fixes harden agent infrastructure, network resilience, and fullscreen UI.

Changes
33
Total Changes (vs Average)
1.9×
Version Type
Patch
Release Focus
Bug Fixes
Day Since Prior Release
1
Release # This Month
#1 of 22
Bug Fix Ratio
55%
Post-Release Edits
+1
Change Category
Ecosystem Impact
macOS drew 4 fixes this release — all background agent related: network entitlements, reconnection loops, Warp fullscreen, key handling. macOS has appeared in 3 of the last 10 releases, each time tracking background agent reliability issues.
Key Themes
7Agentic Autonomy Leap|8Background Agent Infrastructure Stability|5Network & Connection Resilience|8UI & Surface Polish|4New Surface Capabilities
May Help If You've Noticed
Background agent sessions get stuck on 'Running' even after they finish
Claude loses connection mid-response and fails the turn rather than retrying
AWS Bedrock or Mantle sessions hit 'Please run /login' after a while and stop working
Background agents on macOS reconnect every minute or so while the agents view is open
Pressing the back arrow in claude attach exits to the shell instead of opening agent view

Changes in Claude Code v2.1.198

Added2 changes

  • •Added background agent notifications in claude agents — sessions that need input or finish now fire the Notification hook (agent_needs_input / agent_completed)
  • •Added /dataviz skill for chart and dashboard design guidance with a runnable color-palette validator

Improved3 changes

  • •Improved focus mode: subagents launched in a turn now appear in its activity summary, and completed background notifications fold into a single count
  • •Improved syntax highlighting accuracy in code blocks, diffs, and file previews by upgrading to highlight.js 11
  • •Improved API retry UX: the error reason is now shown after the second attempt, and a status page link replaces the spinner tip when the API is overloaded

Fixed18 changes

  • •Fixed brief network drops mid-response aborting the turn — transient errors like ECONNRESET now retry with backoff instead of failing
  • •Fixed excessive background classifier requests when sandboxed processes repeatedly accessed the same network host
  • •Fixed background tasks in web, desktop, and VS Code task panels getting stuck on "Running" after they finish or after resuming a session
  • •Fixed agent teams: a teammate that dies on an API error now reports "failed" to the lead, and messaging a stuck teammate wakes it to retry immediately
  • •Fixed the /diff panel not refreshing when you switch branches or commit outside the session
  • •Fixed markdown tables overflowing and wrapping their right border when rendered in fullscreen mode
  • •Fixed Claude Platform on AWS and Mantle sessions dead-ending with "Please run /login" when the STS token expires — awsAuthRefresh now runs automatically
  • •Fixed "no route to host" for local-network hosts in macOS background agent sessions by declaring Local Network entitlements
  • •Fixed /desktop failing with "Cannot determine working directory" after entering and exiting a worktree
  • •Fixed background agents repeatedly showing "Reconnecting…" every ~52 seconds on macOS while the agents view was open
  • •Fixed pressing ← inside claude attach <id> exiting to the shell instead of opening the agent view
  • •Fixed claude --bg silently creating an unattachable session when combined with --print/-p; the conflicting flags are now rejected up front
  • •Fixed the workflow progress view dropping the earliest agents from the list while the phase counter stayed correct in SDK and desktop-app sessions
  • •Fixed .claude/rules/ conditional rules not loading when the target file is reached via a symlinked path
  • •Fixed Cmd+click not opening URLs in fullscreen mode in Warp on macOS
  • •Fixed double-click word selection in fullscreen mode to select the entire URL including the scheme
  • •Fixed plan mode not auto-allowing read-only tool calls when a session starts in plan mode
  • •Fixed /branch deriving its default fork name from the compaction summary instead of the first real prompt

Removed1 change

  • •Removed the /agents wizard; ask Claude to create or manage subagents, or edit .claude/agents/ directly

Other9 changes

  • •Subagents now run in the background by default, so Claude keeps working while they run and is notified when they finish (previously a gradual rollout)
  • •Claude in Chrome is now generally available
  • •Gateway: added Claude Platform on AWS (anthropicAws) as an upstream provider; model-not-found responses now advance the failover chain
  • •Background agents launched from claude agents now commit, push, and open a draft PR when they finish code work in a worktree, instead of stopping to ask
  • •The built-in Explore agent now inherits the main session's model (capped at opus) instead of running on haiku
  • •Subagents and context compaction now inherit the session's extended thinking configuration, improving output quality on delegated tasks
  • •Keyboard shortcut hints now show opt/cmd instead of alt/super when connected from a Mac over SSH
  • •/login now opens the sign-in dialog from the claude agents view instead of saying it isn't available
  • •Subagents now treat messages from the agent that launched them as normal task direction; an agent's message is still never treated as the user's approval

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