javascript - AngularJS select dropdown not showing up -

i have problem select tag, got populated data wcf-service. when click on selectbox won`t open (see picture below), when navigate keyboard arrows, can select data. other sad thing is: not happen regular. occours, not.

this happens after click on select box. point of time data loaded service.

the concept of 2 select boxes shown below: after selecting in first select box (name="kind"), second should appear. works fine, when error occours , can select data keyboard. if bug in first select box, in second.

setup: ie 11, angularjs v1.5.5, bootstrap v3.3.5 did not happen in ff or chrome

datastructure of $agronomicservice.kindsoftasks.kindsoftasks

• it list of objects
• object: [{id: 1, name: "somename"}, {id: 2, name: "somename2"}]

html-code

<table class="tablepadding">     <thead></thead>     <tbody>         <tr>             <td class="taskagronomicsfontsize">{{i18n.sometranslation1}}:</td>             <td>                 <select name="kind"                     ng-options="label.id label.name label in $agronomicservice.kindsoftasks.kindsoftasks"                     ng-model="$taskservice.currenttask.kindoftask"                     ng-change="setkindoftaskinpath()"                     ng-disabled="isexistingtask || taskfinished"                     class="form-control"                     style="width: 200px;">                 </select>             </td>         </tr>         <tr ng-hide="$taskservice.currenttask.kindoftask == null">             <td ng-hide="$taskservice.currenttask.kindoftask == enums.kindoftask.pp" class="taskagronomicsfontsize">{{i18n.sometranslation2}}:</td>             <td ng-show="$taskservice.currenttask.kindoftask == enums.kindoftask.pp" class="taskagronomicsfontsize">{{i18n.sometranslation3}}:</td>             <td>                 <select name="application"                     ng-options="option.id option.name option in $agronomicservice.applications.applications | acapplicationfilter:$taskservice.currenttask.kindoftask"                     ng-model="$taskservice.currenttask.application"                     ng-change="setapplicationinpath()"                     ng-disabled="isexistingtask || taskfinished"                     class="form-control"                     style="width: 200px;">                 </select>             </td>         </tr>      </body>  </table> 

extract of js-code

var promisekot = $scope.$taskservice.updatekindsoftasks(); promisekot.then(    function(newkindsoftasks) {        $scope.$agronomicservice.kindsoftasks = newkindsoftasks;    });  var updatekindsoftasks = function(){     var promise = $http.post(__serverurl__+'/getdata?' + new date().gettime(),         4,         {             headers : {                 'sessionhash': __sessionhash__,                 'access-control-request-methods': 'get, post',             },             timeout : 600000,             cache : false,             responsetype : 'json'         }     )     .then(function(response) {         return {kindsoftasks: response.data};     },     function(errorpayload) {        //some error handling     });      return promise; }; 

css

.form-control {    font-size: 14px;    border-radius: 0px;    font-family: verdana; }  .form-control:hover {    outline: none !important;    box-shadow: none !important; }  .tablepadding > tbody > tr > td {    padding-top: 10px;    padding-left: 1px;    padding-right: 1px;    padding-bottom: 10px; }  .tablepadding > thead > tr > th {    padding-top: 5px;    padding-left: 1px;    padding-right: 1px;    padding-bottom: 2px; } 

what miss here? or doing wrong?

thanks help!

if need more information feel free ask =)