Hi,

I have a problem with the onChange event with the new decorator with checkboxes. The event is triggered twice every time the form is loaded and twice when a changed is made.

I'm using updateOn: 'blur'; and it's probably what is causing the issue. I had no such problem with the other decorator but the the model doesn't get updated if the input is removed by a condition. Now the model is updated but the "onBlur" and onChange doesn't seems to work well.

`{
 "type" : "objet",
 "properties" : {
	var1: {
 "items" : {
 "enum" : [ 
 "a", 
 "b", 
 "c"
 ],
 "type" : "string"
 },
 "type" : "array",
 "title" : "Oui ou Non 'checkboxes'"
	}
 }
}
options.ngModelOptions={ updateOn: 'blur' };
				 options.onChange = function(modelView, newVal) {
					$timeout(function(){
						debounceUpdate(newVal,modelView);
					})
				};
`