AngularJS ng重复命令不工作

我试图在表中使用Angular的orderBy对对象列表进行排序

<div ng-repeat="processing in model.Processings" class="onePaddingBottom">
    <table datatable="ng" class="table-bordered">

        <tbody >
            <tr ng-repeat="pointer in processing.ProcessingPointers | orderBy:'Sequence'" >
                <td class="col-md-1">

                    <input type="text" ng-model="pointer.Sequence" readonly=""/>
                </td>
                <td><input ng-model="pointer.Name" /></td>
            </tr>
        </tbody>
    </table>
</div>

模型

var Model = function () {
    this.Processings = [];  // array of Processings seen below
    this.categories = [];
    this.Rules = [];
};

var Processing = function (carrierService) {
    this.ProcessingId = 0;
    this.categoryId = 1;
    this.Rules = [];
    this.category = "";
    this.ProcessingPointers = [];  // array of Pointers seen below.
}

var Pointer = function () {
    this.ProcessingID = 0;
    this.ProcessingRuleTypeID = 0;
    this.Sequence = 0;
    this.Name = "";
    // other data items 
}

填充表格时，对象的顺序不正确。序列中的顶部项目始终是最高的项目，其余项目按顺序排列。因此，如果我的指针数组是

var pointers = [
    {Sequence: 1, Name:"John"},
    {Sequence: 2, Name:"Jane"},
    {Sequence: 3, Name:"Joe"},
    {Sequence: 4, Name:"Jill"}
];

顺序总是4，1，2，3。是什么导致了这种订购

更新

下面是一个截图

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Sequence似乎在IE上有效，但在Chrome或Firefox上无效。

无法重现错误。在这个（）上做了一个plnkr，起初认为这是嵌套ng重复的问题-但在我的plnkr中它工作得很好。我更新了这个问题，因为它似乎发生在Chrome上，而不是IE上。

var pointers = [
    {Sequence: 1, Name:"John"},
    {Sequence: 2, Name:"Jane"},
    {Sequence: 3, Name:"Joe"},
    {Sequence: 4, Name:"Jill"}
];