The shortcuts added in T290262: Add keyboard shortcuts for VE template dialog do not seem to be working consistently for all users across different operating systems and browsers. Issues detected so far:
Chrome 97 on macOS (Monterey)
- Cmd+Del not deleting parts of multi-part template content (checked on both wikitext and templates)
- Cmd+Shift+ Up/Down is not moving the parts of multi-part template content (checked on both wikitext and templates)
Firefox 96 on Ubuntu Linux
- Ctrl+Del not deleting parts of multi-part template content
- Ctrl+Shift+ Up/Down is not moving the parts of multi-part template content