ng-model throwing error on input type number in angular 1.3

I have an input field which I want he user to input a number, so I have made an input field with type="number". When I use it in 1.2 I get no errors ``` <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.27/angular.min.js"></script> <script> var app = angular.module('app', []); app.controller('MainCtrl', ['$scope', function ($scope) { $scope.person = [ {"name": "Alex","pts": "10"} ]; }]); </script> <div ng-app="app"> <div ng-controller="MainCtrl"> {{person | json }}<br> name: <span ng-bind="person[0].name"></span></br> <!-- pts: <input ng-model="person[0].pts"> --> pts: <input type="number" ng-model="person[0].pts"><br? </div> </div> ``` http://codepen.io/anon/pen/dPKgVL However when I use it in 1.3 I get Error: [ngModel:numfmt] but when i update the number it still seems to get bound to the scope. ``` <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script> <script> var app = angular.module('app', []); app.controller('MainCtrl', ['$scope', function ($scope) { $scope.person = [ {"name": "Alex","pts": "10"} ]; }]); </script> <div ng-app="app"> <div ng-controller="MainCtrl"> {{person | json }}<br> name: <span ng-bind="person[0].name"> name: <span ng-bind="person[0].name"></span></br> <!-- pts: <input ng-model="person[0].pts"> --> pts: <input type="number" ng-model="person[0].pts"> </div> </div> ``` http://codepen.io/anon/pen/YPvJro Am I doing something wrong here or is this nothing to worry about? I would prefer not to have the errors in my console, when I am trying to debug other issues