Санитарная обработка angular-translate не работает с символами UTF

var myApp = angular.module('myApp', [ 'pascalprecht.translate', 'ngSanitize' ]);

myApp.config(function($translateProvider) {
    $translateProvider.useSanitizeValueStrategy("sanitize");
    $translateProvider.preferredLanguage('en');
    $translateProvider.translations('en', {
        UTF: 'öéü',
    });
});

myApp.controller("myCtrl", function($scope, $translate) {
    $translate("UTF").then(function(trans) {
        $scope.UTFCTRL = trans;
    });
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.16/angular-sanitize.min.js"></script>
<script src="http://rawgit.com/PascalPrecht/bower-angular-translate/master/angular-translate.min.js"></script>

<div ng-app="myApp" ng-controller="myCtrl">
    <div>
        Wrong: <h1>{{ 'UTF' | translate }}</h1>
    </div>
    
    <div>
        Ok: <h1 translate="UTF"></h1>
    </div>
    
    <div>
        Wrong: <h1>{{ UTFCTRL }}</h1>
    </div>
</div>