Working on solve for IE11 dropdown issues, adding test case

server/documents/test.html

@@ -1,42 +0,0 @@
-
-<script src="/build/uncompressed/modules/behavior/form.js"></script>
-<script type='text/javascript'>//<![CDATA[
-$(document).ready(function () {
-
-
-    $('.signup')
-        .form({
-        countryNumber: {
-            identifier: 'somefield',
-            rules: [{
-                type: 'contains[+]',
-                prompt: 'This errors out'
-            }]
-        }
-    }, {
-        inline: true
-    });
-
-});
-</script>
-<style>
-.main.container {
-    padding-top: 200px;
-}
-</style>
-
-
-    <div class="main container">
-  <div class="ui form segment signup">
-    <div class="field">
-        <label>Something with an +</label>
-        <div class="ui left labeled icon input">
-            <input name="somefield" type="text" placeholder="insert something"> <i class="user icon"></i>
-
-            <div class="ui corner label"> <i class="icon asterisk"></i>
-
-            </div>
-        </div>
-    </div>
-    <div class="ui green submit button approve">Check</div>
-</div>

src/modules/dropdown.js

@@ -456,12 +456,14 @@ $.fn.dropdown = function(parameters) {
                 callback();
               }
               else if($.fn.transition !== undefined && $module.transition('is supported')) {
-                $currentMenu.transition({
-                  animation : settings.transition + ' in',
-                  duration  : settings.duration,
-                  complete  : callback,
-                  queue     : false
-                });
+                $currentMenu
+                  .transition({
+                    animation : settings.transition + ' in',
+                    duration  : settings.duration,
+                    complete  : callback,
+                    queue     : false
+                  })
+                ;
               }
               else if(settings.transition == 'slide down') {
                 $currentMenu

src/modules/transition.less

@@ -161,21 +161,15 @@
 .ui.slide.down.transition.out {
   animation-name: slideOut;
   transform-origin: 50% 0%;
-  -ms-transform-origin: 50% 0%;
-  -webkit-transform-origin: 50% 0%;
 }
 
 .ui.slide.up.transition.in {
   animation-name: slide;
   transform-origin: 50% 100%;
-  -ms-transform-origin: 50% 100%;
-  -webkit-transform-origin: 50% 100%;
 }
 .ui.slide.up.transition.out {
   animation-name: slideOut;
   transform-origin: 50% 100%;
-  -ms-transform-origin: 50% 100%;
-  -webkit-transform-origin: 50% 100%;
 }
 
 @keyframes slide {