Fix Claude Code Terminal Display Corruption: Garbled Characters, Gibberish Text, and Unreadable Output in macOS Terminal, VS Code, and JupyterLab (v2.1.142–v2.1.145+)

Run Claude Code with debug logging to identify which escape sequences or terminal protocol features trigger the corruption on your setup. This helps determine whether the issue is kitty keyboard protocol, /goal command, or another feature — and allows you to selectively disable the problematic feature.

1. Enable debug logging: `ANTHROPIC_LOG=debug claude 2>&1 | tee /tmp/claude-debug.log`
2. Use Claude Code normally until corruption appears
3. Search the debug log for terminal-related sequences: `grep -E '(kitty|modifyOtherKeys|CSI|escape|terminal)' /tmp/claude-debug.log`
4. Check your terminal's protocol support: `echo $TERM` and `infocmp` (if available)
5. If using kitty terminal, test with kitty protocol disabled: `KITTY_KEYBOARD_PROTOCOL=0 claude`

ANTHROPIC_LOG=debug claude 2>&1 | tee /tmp/claude-debug.log

grep -E '(kitty|modifyOtherKeys|terminal)' /tmp/claude-debug.log | head -20

echo "TERM=$TERM"

infocmp 2>/dev/null | head -5

# Test without kitty keyboard protocol:

KITTY_KEYBOARD_PROTOCOL=0 claude

v2.1.141 (May 13, 2026) is the last version before the /goal command was introduced in v2.1.142. Users who downgrade to v2.1.141 report no terminal corruption issues — this version does not include the /goal command or its associated terminal escape sequences. This is the most reliable solution if you don't need the /goal feature. Pin the version to prevent npm from auto-upgrading on next install.

1. Uninstall current version: `npm uninstall -g @anthropic-ai/claude-code`
2. Install v2.1.141: `npm install -g @anthropic-ai/claude-code@2.1.141`
3. Verify version: `claude --version`
4. Check npm doesn't auto-upgrade: `npm list -g @anthropic-ai/claude-code`
5. Optionally, pin the version in your shell profile to prevent accidental upgrades

npm uninstall -g @anthropic-ai/claude-code

npm install -g @anthropic-ai/claude-code@2.1.141

claude --version

npm list -g @anthropic-ai/claude-code

# Pin version in shell rc file:

echo 'alias claude="npx -y @anthropic-ai/claude-code@2.1.141"' >> ~/.zshrc

# Pin Claude Code to v2.1.141 in ~/.zshrc or ~/.bashrc:

alias claude='npx -y @anthropic-ai/claude-code@2.1.141'

# Or use a shell function to warn if not pinned:

claude() {

  local ver=$(claude --version 2>/dev/null | grep -oP '[0-9]+\.[0-9]+\.[0-9]+')

  if [ "$ver" != "2.1.141" ]; then

    echo 'WARNING: Expected v2.1.141, got v'$ver

  fi

  npx -y @anthropic-ai/claude-code@2.1.141 "$@"

}

Terminal resize triggers a full redraw of the terminal buffer via the SIGWINCH signal, which forces the terminal emulator to re-render all visible text from the backing buffer. In VS Code, toggling full-screen mode (F11 or View > Appearance > Full Screen) or resizing the terminal panel forces the terminal emulator to re-render, restoring readability. Another reliable method: use /save to persist session state, then /resume in a fresh terminal to restore the session with a clean display buffer. This is not a permanent fix — corruption will return with continued usage — but it allows you to read current output and continue working without restarting.

1. When terminal text is garbled, resize the terminal window slightly — any dimension change triggers a redraw
2. In VS Code: press F11 twice (enter and exit full-screen) to force a terminal redraw
3. Alternatively in VS Code: Ctrl+` to close the terminal panel, then Ctrl+` again to reopen — this reinitializes the terminal
4. In standalone Terminal.app: resize the window by dragging a corner
5. In JupyterLab: resize the browser window or drag the terminal panel divider
6. If corruption is severe and resize doesn't help: type `/save` to save session, exit Claude Code, then `claude --resume` to restore

# Quick terminal reset without leaving Claude Code:

# Ctrl+L — Clear screen (may not fix buffer corruption)

# Resize window — most reliable quick fix

# In Claude Code session:

/save

# Then exit and resume:

claude --resume

# VS Code keyboard shortcuts for terminal recovery:

# F11           — Toggle Full Screen (forces complete terminal redraw)

# Ctrl+`        — Toggle Terminal Panel (reinitializes terminal process)

# Ctrl+Shift+P → 'Terminal: Clear' — Clear terminal buffer

# Add to VS Code keybindings.json for quick terminal reset:

# { "key": "ctrl+shift+r", "command": "workbench.action.terminal.clear" }

Anthropic staff (diana-ant) confirmed the fix shipped in v2.1.144 (May 18, 2026): 'Hello, this issue should have been fixed in v2.1.144. Could you please try to update and confirm if it hasn't? Thanks!' Claude bot also marked: 'This issue was fixed as of version 2.1.144.' Upgrade to the latest version and test. However, multiple users report the corruption persists in v2.1.144 and v2.1.145 in VS Code and JupyterLab terminals — the fix may be partial. If corruption persists after upgrade, proceed to Solution 2 (terminal resize workaround) or Solution 3 (downgrade).

1. Upgrade Claude Code: `npm install -g @anthropic-ai/claude-code@latest`
2. Verify version: `claude --version` — expect output >= 2.1.144
3. Check which binary you're running: `file $(which claude)` — expect standalone binary or Node.js script
4. Start a new Claude Code session and avoid using /goal command during testing
5. Monitor terminal output for corruption over a 10-15 minute session with multiple tool calls
6. If corruption persists, try the VS Code terminal resize workaround (Solution 2) or downgrade (Solution 3)

npm install -g @anthropic-ai/claude-code@latest

claude --version

file $(which claude)

# Quick test without entering interactive mode:

claude -p 'list files in current directory in a table format'

# Check if running in kitty mode:

echo $TERM