MAGETWO-38001: Merchant isn't navigated to tab with failed JS validation

Author: vzaets

lib/web/mage/backend/tabs.js

@@ -183,7 +183,7 @@
                 panel.attr("aria-labelledby", anchorId);
                 if (that.options.excludedPanel.indexOf(anchorId+'_content') < 0) {
                     panel.addClass(that.options.tabPanelClass);
-                };
+                }
             });
 
             this.panels
@@ -318,7 +318,11 @@
          * @protected
          */
         _onInvalid: function(e) {
-            var cssError = '_error';
+            var cssError = '_error',
+                fakeEvent = e;
+
+            fakeEvent.currentTarget = $(this.anchors).eq(e.data.index);
+            this._eventHandler(fakeEvent);
 
             this.anchors.eq(e.data.index).addClass(cssError).find('.' + cssError).show();
             this._updateNavTitleMessages(e, cssError);