Title disappears after changing datatable language

[vincentf06]

I'm using angular translate, reading language from json files, according to #351 I have to define column titles in the view. But in this case column titles will disappear if I switch datatable language(dtOptions.language.url). TH element is still there, however no text node inside.

update:
title will appear again if running $route.reload()

html:

            <table class="data-table" datatable="" dt-options="dtOptions" dt-columns="dtColumns" dt-instance="dtInstance">
                <thead>
                    <tr>
                        <th>{{"datatable.type" | translate}}</th>
                        <th>{{"datatable.name" | translate}}</th>
                    </tr>
                </thead>
            </table>

columns:

        $scope.dtColumns = [
            {
              'mData': null,
              'mRender': function(data, type, full, meta) {
                if (data.type == 'folder') {
                  return '<a class="folder" ng-click="getFolderContent(\'' + data.name + '\'); $event.stopPropagation()">' +
                    '</a>' 
                } else {
                return '<a class="image">' +
                    '</a>'
                } 
              }
            },
            {'mData': 'name'},     
        ];

globally change language in parent controller:

        $scope.changeLng = function(lng){
            $translate.use(lng);
            $scope.$broadcast('changelanguage', lng)
        };

change datatable language in child controller:

        $scope.$on('changelanguage', function(event, lng){
          $scope.dtOptions.language.url = '../locales/dt/'+lng+'.json';
          $scope.dtInstance.rerender();
        })

text node disappears

<th class="sorting_asc" tabindex="0" aria-controls="DataTables_Table_0" rowspan="1" colspan="1" aria-sort="ascending" aria-label=": activate to sort column descending" style="width: 226px;"></th>

[l-lin]

Can you put it on a plnkr or something alike? I can't really understand your issue.

[OlympicLarry]

how about:
$scope.dtOptions = $scope.dtOptions.withLanguageSource('../locales/dt/'+lng+'.json');

[vincentf06]

Yes I've tried that, it's still not working. I'll reproduce the issue latter on