From 601853ca1f213695ea0f64d15dab57420547966c Mon Sep 17 00:00:00 2001
From: sillicon <sillicontj@gmail.com>
Date: Thu, 28 Jun 2018 16:44:08 -0700
Subject: [PATCH] Fix dropdown issue

---
 src/definitions/modules/dropdown.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/definitions/modules/dropdown.js b/src/definitions/modules/dropdown.js
index 13652cc100..2bf378e429 100644
--- a/src/definitions/modules/dropdown.js
+++ b/src/definitions/modules/dropdown.js
@@ -2415,9 +2415,13 @@ $.fn.dropdown = function(parameters) {
           },
           direction: function($menu) {
             if(settings.direction == 'auto') {
-              // reset position
-              module.remove.upward();
-
+              // reset position, remove upward if it's base menu
+              if (!$menu) {
+                module.remove.upward();
+              } else if ($menu.hasClass('upward')) {
+                //we need make sure when make assertion openDownward for $menu, $menu does not have upward class
+                $menu.removeClass('upward');
+              }
               if(module.can.openDownward($menu)) {
                 module.remove.upward($menu);
               }