Fixes #3917, adds check for bubbled label event coming from surrounding label

src/definitions/modules/dropdown.js

@@ -1009,6 +1009,9 @@ $.fn.dropdown = function(parameters) {
                   ? module.show
                   : module.toggle
               ;
+              if(module.is.bubbledLabelClick(event)) {
+                return;
+              }
               if( module.determine.eventOnElement(event, toggleBehavior) ) {
                 event.preventDefault();
               }
@@ -2920,6 +2923,9 @@ $.fn.dropdown = function(parameters) {
           active: function() {
             return $module.hasClass(className.active);
           },
+          bubbledLabelClick: function(event) {
+            return $(event.target).is('select, input') && $module.closest('label').length > 0;
+          },
           alreadySetup: function() {
             return ($module.is('select') && $module.parent(selector.dropdown).length > 0  && $module.prev().length === 0);
           },