Angularjs ng-blur not working in Chrome or Firefox

I am using the ui.bootstrap collapse directive to display a dropdown menu. I would like to automatically collapse it when the user clicks outside of the div.

When the user clicks the Filter button, I set focus using:

.directive('setFocus', function () {
         return {
            restrict: 'A',
            scope: {
                focusValue: "=setFocus"
            },
            link: function ($scope, $element, attrs) {
                $scope.$watch("focusValue", function (currentValue, previousValue) {
                    if (currentValue === true && !previousValue) {
                        $element[0].focus();
                        console.log('set focus  from setFocus directive');
                    } else if (currentValue === false && previousValue) {
                        $element[0].blur();
                        console.log('blurr from setFocus directive');
                    }
                })
        }
        }
});

      

        
        
        
      

    

Html

<div collapse="isDropDownCollapsed" class='div2' align-element-right='el1' set-focus='!isDropDownCollapsed' ng-blur="toggleMenu()">

      

        
        
        
      

    

Controller

app.controller('testCtrl', function ($scope) {
$scope.isDropDownCollapsed = true;
$scope.toggleMenu = function () {
    $scope.isDropDownCollapsed = !$scope.isDropDownCollapsed;
}

      

        
        
        
      

    

});

It works in IE v11, but focus is also lost when the checkbox is selected. It doesn't work in Chrome v38 or Firefox version 33.1.

sample code