Dropdowns don't appear to be triggering on-toggle

[sidouglas]

Am I missing something:

Using the example dropdown component files, when I change the value in the dropdown by clicking a selecting a value, the dropdown should trigger an on-toggle event. But it doesn't.

Even in the online valor-software.com/ng2-bootstrap/index-bs4.html (github wants to keep forcing https so the link breaks - use http) the on-toggle event doesn't fire. Expected behaviour should be Dropdown is now: with state in the console.