computer-use MCP: Cannot read properties of undefined (reading 'registerEscape')

Description

Calling any computer-use MCP tool (e.g. screenshot) fails with:

Cannot read properties of undefined (reading 'registerEscape')

Environment

• Claude Code v2.1.87
• macOS Darwin 25.3.0 (Mac Mini M-series)
• Shell: zsh

Steps to Reproduce

1. Start Claude Code CLI
2. computer-use MCP shows as connected (cloud-hosted via claude.ai)
3. Call any computer-use tool (e.g. mcp__computer-use__screenshot)
4. Error: Cannot read properties of undefined (reading 'registerEscape')

Additional Context

• /mcp reconnect reports success but the error persists
• Reproduced across multiple full restarts of Claude Code and multiple /mcp reconnects
• Other cloud-hosted MCPs (Gmail, Google Calendar, Notion, Gamma, etc.) work fine
• The error appears to be client-side in how the CLI handles the computer-use MCP connection