The fix #765 causes another bug PHP0419 with instanceof test:
public function group(array $addresses)
{
$status = true;
$this->resetAddresses();
foreach($addresses as $addressApi)
{
if($addressApi instanceof Address) {
$this->_datas['addresses'][] = $addressApi;
}
else {
$status = false;
}
}
$this->refresh();
return $status;
}

Thank you for the fix.