M2C-22619 Fix Tabs widget with Accordion

Author: ptylek

lib/web/mage/tabs.js

@@ -102,21 +102,21 @@ define([
          * @private
          */
         _processPanels: function () {
-            this.contents = this.element.find(this.options.content);
+            this.contents = this.element.children(this.options.content);
 
-            this.collapsibles = this.element.find(this.options.collapsibleElement);
+            this.collapsibles = this.element.children(this.options.collapsibleElement);
 
             this.collapsibles
                 .attr('role', 'presentation')
                 .parent()
                 .attr('role', 'tablist');
 
-            this.headers = this.element.find(this.options.header);
+            this.headers = this.element.children(this.options.header);
 
             if (this.headers.length === 0) {
                 this.headers = this.collapsibles;
             }
-            this.triggers = this.element.find(this.options.trigger);
+            this.triggers = this.element.children(this.options.trigger);
 
             if (this.triggers.length === 0) {
                 this.triggers = this.headers;