used code bellow in our page,submitHandler still got triggered even if debug is true

$("#commentForm").validate({
	debug: true,
	submitHandler: function () {
		alert("submitted!");
	}
});

jquery-validation-1.16.0
chrome 59.0.3071.115

Steps to reproduce

use attched file to reproduce
debug.zip

Expected behaviour

submitHandler not get triggered

Actual behaviour

submitHandler get triggered