Claude-Code v2.1.94: Add Mantle, Fix 15+ Bugs

Claude-Code v2.1.94 Release Notes

Claude-Code v2.1.94 adds new features and fixes multiple bugs across the AI coding assistant's core functionality, plugin system, and VS Code integration.

New Features

Amazon Bedrock with Mantle support: Enable with CLAUDE_CODE_USE_MANTLE=1 environment variable
Default effort level change: Changed from medium to high for API-key, Bedrock/Vertex/Foundry, Team, and Enterprise users. Control with /effort command
Slack MCP improvements: Added compact Slacked #channel header with clickable channel link for send-message tool calls
Plugin system enhancements: Added keep-coding-instructions frontmatter field support for plugin output styles
Session title hooks: Added hookSpecificOutput.sessionTitle to UserPromptSubmit hooks for setting session titles
Stable plugin skill names: Skills declared via "skills": ["./"] now use the skill's frontmatter name instead of directory basename

Bug Fixes

Rate limit handling: Fixed agents appearing stuck after 429 rate-limit responses with long Retry-After headers - errors now surface immediately
macOS login: Fixed Console login silently failing with "Not logged in" when login keychain is locked or password out of sync. Error now surfaces and claude doctor diagnoses the fix
Plugin system fixes: Fixed plugin skill hooks defined in YAML frontmatter being silently ignored; fixed plugin hooks failing with "No such file or directory" when CLAUDE_PLUGIN_ROOT not set; fixed ${CLAUDE_PLUGIN_ROOT} resolving to marketplace source directory instead of installed cache for local-marketplace plugins
UI/UX improvements: Fixed scrollback showing same diff repeated and blank pages in long-running sessions; fixed multiline user prompts in transcript indenting wrapped lines under ❯ caret instead of under text; fixed Shift+Space inserting literal word "space" instead of space character in search inputs
Terminal rendering: Fixed hyperlinks opening two browser tabs when clicked inside tmux running in xterm.js-based terminals (VS Code, Hyper, Tabby); fixed alt-screen rendering bug where content height changes mid-scroll could leave compounding ghost lines
Environment variable handling: Fixed FORCE_HYPERLINK environment variable being ignored when set via settings.json env
Accessibility: Fixed native terminal cursor not tracking selected tab in dialogs, enabling screen readers and magnifiers to follow tab navigation
Bedrock compatibility: Fixed Bedrock invocation of Sonnet 3.5 v2 by using the us. inference profile ID
Session management: Fixed SDK/print mode not preserving partial assistant response in conversation history when interrupted mid-stream; improved --resume to resume sessions from other worktrees of same repo directly instead of printing a cd command
Text encoding: Fixed CJK and other multibyte text being corrupted with U+FFFD in stream-json input/output when chunk boundaries split UTF-8 sequences

VS Code Specific Fixes

Reduced cold-open subprocess work on starting a session
Fixed dropdown menus selecting wrong item when mouse was over list while typing or using arrow keys
Added warning banner when settings.json files fail to parse, alerting users that permission rules aren't being applied

📖 Read the full source: GitHub Claude-Code