diff --git a/core/misc/tableheader.js b/core/misc/tableheader.js
index 448d0b2..e47a4b2 100644
--- a/core/misc/tableheader.js
+++ b/core/misc/tableheader.js
@@ -1,13 +1,27 @@
 (function ($, Drupal, displace) {
 
   "use strict";
-
+  
+  function checkTableHeaderInit($context) {
+    if (typeof TableHeader.offsetTop === 'undefined') {
+      var offsetTop = TableHeader.computeOffsetTop();
+      var $firstTableOffset = $context.find('table.sticky-enabled').eq(0).offset();
+      return scrollValue('scrollTop') > ($firstTableOffset.top - offsetTop);
+    }
+    return false;
+  }
   /**
    * Attaches sticky table headers.
    */
   Drupal.behaviors.tableHeader = {
     attach: function (context) {
-      $(window).one('scroll.TableHeaderInit', {context: context}, tableHeaderInitHandler);
+      var $window = $(window);
+      var $context = $(context);
+      $window.one('scroll.TableHeaderInit', {$context: $context}, tableHeaderInitHandler);
+      // Initialize if the window is scrolled already.
+      if (checkTableHeaderInit($context)) {
+        $window.trigger('scroll.TableHeaderInit');
+      }
     }
   };
 
@@ -17,10 +31,12 @@
 
   // Select and initialize sticky table headers.
   function tableHeaderInitHandler(e) {
-    var $tables = $(e.data.context).find('table.sticky-enabled').once('tableheader');
+    var $tables = e.data.$context.find('table.sticky-enabled').once('tableheader');
     for (var i = 0, il = $tables.length; i < il; i++) {
       TableHeader.tables.push(new TableHeader($tables[i]));
     }
+    // Trigger the scroll event to immediately show headers is necessary.
+    $(window).trigger('scroll');
     forTables('onScroll');
   }
 
@@ -115,7 +131,8 @@
      *
      * @type {Array}
      */
-    tables: []
+    tables: [],
+    offsetTop: undefined
   });
 
   /**