TbExtendedGridView 'fixedHeader' => true, is not working

[bpap]

Just upgraded to the latest bootstrap and yiibooster versions, and the fixed header functionality stopped working. My code is as follows:

$this->widget('booster.widgets.TbExtendedGridView',
array(
'id' => 'vpolicy-grid',
'fixedHeader' => true,
'headerOffset' => 40,
'dataProvider' => $model->searchForPolicyIndex(),
'filter' => $model,
'type' => 'striped bordered condensed hover',
'htmlOptions' => array('style'=>'cursor: pointer;'),
'selectableRows' => 1, // you can select only 1 row!!
'selectionChanged' => 'function(id){ var objectId = $("#"+id).yiiGridView("getSelection"); if (isNaN(objectId) || objectId == ""){return;} location.href = "'.$this->createUrl('policy/view').'&id="+$("#"+id).yiiGridView("getSelection");}',

Did anyone come across this issue?

Thanks!