text: Ext.define('Ext.theme.triton.grid.column.Column', {
      override: 'Ext.grid.column.Column',
      
      compatibility: Ext.isIE8,
      
      onTitleMouseOver: function() {
          var triggerEl = this.triggerEl;
          
          this.callParent(arguments);
          
          if (triggerEl) {
              triggerEl.syncRepaint();
          }
      }
  });
  