diff --git a/Packages/ohif-core/client/components/base/mixins/dropdown.js b/Packages/ohif-core/client/components/base/mixins/dropdown.js
index ce2cd94c7..627f72ae8 100644
--- a/Packages/ohif-core/client/components/base/mixins/dropdown.js
+++ b/Packages/ohif-core/client/components/base/mixins/dropdown.js
@@ -13,27 +13,43 @@ OHIF.mixins.dropdown = new OHIF.Mixin({
         onRendered() {
             const instance = Template.instance();
             const { event, centered, marginTop } = instance.data.options;
-
-            // Destroy the Blaze created view (either created with template calls or with renderWithData)
-            instance.destroyView = () => {
-                if (typeof instance.data.destroyView === 'function') {
-                    instance.data.destroyView();
-                } else {
-                    Blaze.remove(instance.view);
-                }
-            };
-
-            // Stop here and destroy the view if no items was given
-            if (!instance.data.items.length) {
-                instance.data.promiseReject();
-                return instance.destroyView();
-            }
-
             // Get the dropdown element to enable position manipulation
             const $dropdown = instance.$('.dropdown');
             const dropdown = $dropdown[0];
             const $dropdownMenu = $dropdown.children('.dropdown-menu');
 
+            // Destroy the Blaze created view (either created with template calls or with renderWithData)
+            instance.destroyView = () => {
+                const destroyHandle = () => {
+                    if (typeof instance.data.destroyView === 'function') {
+                        instance.data.destroyView();
+                    } else {
+                        Blaze.remove(instance.view);
+                    }
+                };
+
+                const timeout = setTimeout(destroyHandle, 500);
+                $dropdownMenu.one('transitionend', () => {
+                    destroyHandle();
+                    clearTimeout(timeout);
+                });
+                $dropdown.removeClass('open');
+            };
+
+            // Destroy the view when the promise is fullfilled
+            instance.data.promise.then(instance.destroyView, instance.destroyView);
+
+            // Close the dropdown resolving or rejecting the promise
+            instance.close = (isResolve, result) => {
+                const method = instance.data[isResolve ? 'promiseResolve' : 'promiseReject'];
+                method(result);
+            };
+
+            // Stop here and destroy the view if no items was given
+            if (!instance.data.items.length) {
+                return instance.close(false);
+            }
+
             dropdown.oncontextmenu = () => false;
 
             const cssBefore = { 'z-index': 10000 };
@@ -76,13 +92,11 @@ OHIF.mixins.dropdown = new OHIF.Mixin({
                 const $target = $(event.currentTarget);
                 const isDisabled = $target.hasClass('disabled');
                 if (isDisabled) {
-                    instance.data.promiseReject();
+                    instance.close(false);
                 } else {
                     const component = $target.data('component');
-                    instance.data.promiseResolve(component.actionResult);
+                    instance.close(true, component.actionResult);
                 }
-
-                instance.destroyView();
             },
 
             'click .dropdown'(event, instance) {
@@ -91,8 +105,7 @@ OHIF.mixins.dropdown = new OHIF.Mixin({
                     event.preventDefault();
                     event.stopPropagation();
                 } else {
-                    instance.data.promiseReject();
-                    instance.destroyView();
+                    instance.close(false);
                 }
             },
 
@@ -100,8 +113,7 @@ OHIF.mixins.dropdown = new OHIF.Mixin({
                 Meteor.defer(() => {
                     const $focus = $(':focus');
                     if (!$focus.length || !$.contains(event.currentTarget, $focus[0])) {
-                        instance.data.promiseReject();
-                        instance.destroyView();
+                        instance.close(false);
                     }
                 });
             }
diff --git a/Packages/ohif-core/client/components/bootstrap/dropdown/dropdown.styl b/Packages/ohif-core/client/components/bootstrap/dropdown/dropdown.styl
index fa065b9d4..e8eff5d31 100644
--- a/Packages/ohif-core/client/components/bootstrap/dropdown/dropdown.styl
+++ b/Packages/ohif-core/client/components/bootstrap/dropdown/dropdown.styl
@@ -1,9 +1,16 @@
 @import "{ohif:design}/app"
 
 .dropdown
+  cursor: default
   outline: none
 
   ul.dropdown-menu
+    display: block
+    transform(scale(0))
+    transition(transform 0.3s ease)
+
+    &.dropdown-menu-right
+      transform-origin(100% 0%)
 
     li.divider
       margin: 4px 0
@@ -17,3 +24,6 @@
         max-width: 18px
         max-height: 18px
         vertical-align: middle
+
+  &.open ul.dropdown-menu
+    transform(scale(1))
diff --git a/Packages/ohif-header/client/components/header/header.js b/Packages/ohif-header/client/components/header/header.js
index acdbc1b3d..f86dad512 100644
--- a/Packages/ohif-header/client/components/header/header.js
+++ b/Packages/ohif-header/client/components/header/header.js
@@ -1,13 +1,10 @@
-import { Meteor } from 'meteor/meteor';
 import { Template } from 'meteor/templating';
-import { ReactiveVar } from 'meteor/reactive-var';
 import { $ } from 'meteor/jquery';
 import { OHIF } from 'meteor/ohif:core';
 
 Template.header.onCreated(() => {
     const instance = Template.instance();
 
-    instance.dropdownOpen = new ReactiveVar(false);
     instance.dropdownItems = [];
     instance.autorun(() => {
         OHIF.header.dropdownObserver.depend();
@@ -16,22 +13,17 @@ Template.header.onCreated(() => {
 });
 
 Template.header.events({
-    'mousedown .header-menu'(event, instance) {
-        if (instance.dropdownOpen.get()) {
-            event.preventDefault();
-            return $(event.currentTarget).focus();
-        }
-    },
-
     'click .header-menu'(event, instance) {
         event.preventDefault();
-        if (instance.dropdownOpen.get()) return;
-        instance.dropdownOpen.set(true);
-        const closeHandler = () => Meteor.setTimeout(() => instance.dropdownOpen.set(false), 200);
+
+        // Prevent dropdown from being opened if there's one already opened
+        if ($(event.currentTarget).find('.dropdown').length) return;
+
+        // Show the dropdown
         OHIF.ui.showDropdown(instance.dropdownItems, {
             parentElement: event.currentTarget,
             menuClasses: 'dropdown-menu-right',
             marginTop: '25px'
-        }).then(closeHandler).catch(closeHandler);
+        });
     }
 });