If articles have the same publication date only one of them shows up.
This is due to the index the item is given at line 58 of the helper.php.
It overwrites any existing items in that array.
i made this simple fix:
$int = rand ( 0 , 99999999 );
$itemDateIndex = strftime('%Y%m%d%H%M',strtotime($item->pubDate)).$int;
The question is, Will this be fixed in a future update?