diff --git a/js/dropdown.js b/js/dropdown.js
index 905ee3979e..dc75248e38 100644
--- a/js/dropdown.js
+++ b/js/dropdown.js
@@ -83,6 +83,7 @@
   }
 
   function clearMenus(e) {
+    if (e && e.which === 3) return
     $(backdrop).remove()
     $(toggle).each(function () {
       var $parent = getParent($(this))