The bug can lead to the situation where all of your content gets hidden if you have
RootNodeList[]=2

The problem is in the line where nodes for hiding are fetched:

                 $nodeArray = $rootNode->subTree( $hiddenNodesParams );

$hiddenNodesParams looks like this:

$hiddenNodesParams = array(
    'LoadDataMap' => false,
    'Limit' => $limit,
    'Offset' => $offset,
    'SortBy' => array( array( 'published', true ) ) );

Basically all nodes are fetched.

Solution is to use $countParams instead.

Steps to reproduce

• create one class with hide_data
• create an object with hide_data in the past somewhere in the content tree
• configure content.ini with RootNodeList[]=2
• execute cronjob