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v2.1.74 Claude Code Release Notes

Mar 12, 2026
Claude's Analysisby Sonnet 4.6
Full Analysis

Memory leak causing unbounded RSS growth patched; MCP auth hangs and plugin failures fixed; /context gains optimization tips; managed policy bypass now blocked.

Changes
17
Total Changes (vs Average)
1.0×
Version Type
Patch
Release Focus
Bug Fixes
Days Since Prior Release
0
Release # This Month
#8 of 20
Bug Fix Ratio
76%
Post-Release Edits
—
Change Category
Ecosystem Impact
Windows and Plugins/Skills have each appeared in 6 of the last 10 releases, VS Code in 5 of 10. March has been defined by a sustained multi-front compatibility push, tightening Claude Code across every major environment simultaneously.
Key Themes
3Memory Leak & Context Tooling|4MCP Auth & Plugin Ecosystem|5Cross-Platform & Editor Polish|3Security, Policy & Agent Config
May Help If You've Noticed
Claude Code's memory usage grows without bound during long or repeated sessions
MCP login hangs or stops re-prompting after your token expires
Hebrew, Arabic, or other right-to-left text appears garbled or reversed in your terminal
Agents ignore the model you specified in frontmatter and fall back to the default
Plugins fail to install or update from the marketplace during a chat session

Changes in Claude Code v2.1.74

Added2 changes

  • •Added actionable suggestions to /context command — identifies context-heavy tools, memory bloat, and capacity warnings with specific optimization tips
  • •Added autoMemoryDirectory setting to configure a custom directory for auto-memory storage

Improved1 change

  • •[VSCode] Improved scroll wheel responsiveness in the integrated terminal with terminal-aware acceleration

Fixed13 changes

  • •Fixed memory leak where streaming API response buffers were not released when the generator was terminated early, causing unbounded RSS growth on the Node.js/npm code path
  • •Fixed managed policy ask rules being bypassed by user allow rules or skill allowed-tools
  • •Fixed full model IDs (e.g., claude-opus-4-5) being silently ignored in agent frontmatter model: field and --agents JSON config — agents now accept the same model values as --model
  • •Fixed MCP OAuth authentication hanging when the callback port is already in use
  • •Fixed MCP OAuth refresh never prompting for re-auth after the refresh token expires, for OAuth servers that return errors with HTTP 200 (e.g. Slack)
  • •Fixed voice mode silently failing on the macOS native binary for users whose terminal had never been granted microphone permission — the binary now includes the audio-input entitlement so macOS prompts correctly
  • •Fixed SessionEnd hooks being killed after 1.5 s on exit regardless of hook.timeout — now configurable via CLAUDE_CODE_SESSIONEND_HOOKS_TIMEOUT_MS
  • •Fixed /plugin install failing inside the REPL for marketplace plugins with local sources
  • •Fixed marketplace update not syncing git submodules — plugin sources in submodules no longer break after update
  • •Fixed unknown slash commands with arguments silently dropping input — now shows your input as a warning
  • •Fixed Hebrew, Arabic, and other RTL text not rendering correctly in Windows Terminal, conhost, and VS Code integrated terminal
  • •Fixed LSP servers not working on Windows due to malformed file URIs
  • •[VSCode] Fixed delete button not working for Untitled sessions

Changed1 change

  • •Changed --plugin-dir so local dev copies now override installed marketplace plugins with the same name (unless that plugin is force-enabled by managed settings)

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