Replacing input element in the directive re-attaches the formatters and parsers

[katranci]

Given that I've got the following HTML template:

    <input ng-model="test" my-directive />

And the directive definition:

    angular.module('myApp', []).
        directive('myDirective', function() {
            return {
                restrict: 'A',
                template: '<input ng-maxlength="3" />',
                replace: true
            }
        });

When I enter more than three characters the input is set as invalid and then set as valid immediately after due to the model value being set to undefined as a result of the first formatter.

Here is a Fiddle that shows the behaviour: http://jsfiddle.net/katranci/G8znC/

[IgorMinar]

this issue is more generic. see: #2617 (comment)