dropdown not allocating space on first ng click secomd time it appears

<select class="form-control"  name="district"  id="district" data-ng-model="fragmentCtrlData[fragment.complextype].DISTRICT" ng-click="$root.masterLoad('DISTRICTMASTER')"  ng-options="item for item in $root.form"   >
</select>

when ng_click fire dropdown not allocating space second time it allocating space
First it have scroller in screen but second time it showing proper values onscreen

Source: AngularJS

from Angular Questions https://angularquestions.com/2017/10/12/dropdown-not-allocating-space-on-first-ng-click-secomd-time-it-appears/
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