Set Active 'false' not working in custom tab in magento admin customer edit page

Question

I have successfully added a custom tab in customer_edit_tabs section and is ordered after orders tab.

However when I go to edit customer page, my custom tab is by default set to active instead showing me default active tab (i.e. Customer View).

I have done this so far but no luck-

protected function _prepareLayout()
    {
        //get all existing tabs
        $this->parent = parent::_prepareLayout();
        //add new tab
        $this->addTab('relate_order', array(
            'label'     => Mage::helper('relate_order')->__('Relate Order'),
            'content'   => $this->getLayout()
             ->createBlock('relate_order/adminhtml_customer_edit_tabs_relate', 'relate.order')->toHtml(),
            'after'     => 'orders',

            //setting non active not working
            'active'    => false
        ));
        return $this->parent;
    }

Even though I have mentioned this new tab to be not active, it still shows up at first.

Please help.

Answer 1

To have the tab active, it either have to be the first or it has to return a boolean true:

\Mage_Adminhtml_Block_Widget_Tabs::addTab
app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php:140
if (is_null($this->_activeTab)) $this->_activeTab = $tabId;
if (true === $this->_tabs[$tabId]->getActive()) $this->setActiveTab($tabId);

You don't return a boolean true, so the first case is yours. You should try to <depends> on Mage_Adminhtml to make sure, your layout xml is loaded later, and your tab is not the first.