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v2.1.149 Claude Code Release Notes

May 22, 2026
Claude's Analysisby Sonnet 4.6
Full Analysis

Massive stability pass: PowerShell permission bypasses closed, macOS find crash fixed, 3 hangs gone, plus /usage now breaks down cost by skills, subagents, and MCP servers.

Changes
26
Total Changes (vs Average)
1.5×
Version Type
Patch
Release Focus
Bug Fixes
Day Since Prior Release
1
Release # This Month
#19 of 27
Bug Fix Ratio
81%
Post-Release Edits
—
Change Category
Ecosystem Impact
Plugins/Skills and Terminals have each appeared in 8 of the last 10 releases — the most sustained focus of any non-General platform recently. MCP at 7/10 keeps extensibility and terminal stability as twin focal points through May's release sprint.
Key Themes
4Permission & Security Hardening|5Crash & Hang Elimination|8UI & Interaction Polish|4New Capabilities|5Session & Remote Continuity
May Help If You've Noticed
macOS slows to a crawl or hangs when Claude runs find on a large codebase
Your terminal freezes after accepting a policy dialog at startup
PowerShell allows commands to read files outside your project folder
The Ctrl+O transcript view opens frozen and doesn't update with new messages
You can't tell what's using up your rate limits — skills, subagents, or MCP servers

Changes in Claude Code v2.1.149

Improved1 change

  • •Improved /feedback reports to include the conversation that happened before context compaction, making issues from earlier in long sessions easier to triage

Fixed21 changes

  • •Fixed a PowerShell permission bypass: built-in cd functions (cd.., cd\, cd~, X:) changed the working directory undetected, letting a later command read outside the workspace
  • •Fixed the sandbox write allowlist in git worktrees covering the entire main repository root instead of only the shared .git directory (with hooks/ and config denied)
  • •Fixed PowerShell prefix/wildcard allow rules (e.g. PowerShell(dotnet.exe build *)) not pre-approving native executables and scripts
  • •Fixed a permission-analysis gap where the parser trusted stale variable-tracking values for PWD/OLDPWD/DIRSTACK across cd/pushd/popd
  • •Fixed find in the Bash tool exhausting the macOS system file/vnode table and crashing the host on large directory trees
  • •Fixed the managed-settings approval dialog leaving the terminal frozen after accepting at startup
  • •Fixed /ultraplan and remote session creation failing with "Could not capture uncommitted changes" when the working tree has no real changes
  • •Fixed otelHeadersHelper failing silently when the script path contains spaces; helper failures are now reported in /doctor and the debug log
  • •Fixed the thinking spinner staying amber across tool calls and onto fresh thinking bursts
  • •Fixed collapsed Bash output reporting the wrong hidden-line count for outputs with many short lines
  • •Fixed slash-command argument-hint clipping trailing typed characters when the hint overflows the input box
  • •Fixed argument-hint and progressive arg suggestions not appearing after Tab-completing a skill whose frontmatter name: differs from its directory basename
  • •Fixed the status bar showing the user's baseline /effort setting instead of the effort level applied by skill/agent effort: frontmatter
  • •Fixed Ctrl+O transcript view freezing at the moment it was opened instead of tailing new messages
  • •Fixed editing a recalled prompt-history entry losing the edit when navigating further up/down with arrow keys
  • •Fixed /config exit summary reporting phantom changes to auto-compact and theme when toggling unrelated settings
  • •Fixed /insights crashing when cached session-meta files are missing optional fields
  • •Fixed malformed PowerShell and History tool calls with missing input being misclassified as reads in transcript collapsing
  • •Fixed renaming a Remote Control session from claude.ai or the Claude mobile app not updating the local session name for claude --resume
  • •Fixed a race where a just-submitted prompt could appear twice in the up-arrow history
  • •Fixed tapping the "Jump to bottom" pill in fullscreen mode not dismissing it immediately

Other4 changes

  • •/usage now shows a per-category breakdown of what's driving your limits usage — skills, subagents, plugins, and per-MCP-server cost
  • •/diff detail view can now be scrolled with the keyboard (arrows, j/k, PgUp/PgDn, Space, Home/End)
  • •Markdown output now renders GFM task list checkboxes (- [ ] todo / - [x] done) instead of plain bullets
  • •Enterprise: added the allowAllClaudeAiMcps managed setting to load claude.ai cloud MCP connectors alongside managed-mcp.json

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