Ember - Input Checkbox Helper not triggering inside Component

I have a simple Ember checkbox in my Ember application:

{{input type="checkbox" checked=isChecked}}

This worked fine when I had it inside a route's template, but I then moved the template code over to a component, and now the checkbox simply won't check - it just stays in the unchecked (false) state when clicked.

This is using Ember + CLI 1.13. Would there be any reason the checkbox helper wouldn't work inside a component? Any extra steps I need to take?

Thanks in advance.