When publishing recursively a node and its children having those different node types, order is not preserved in the public instance.

Steps to reproduce:

1. From JCR browser create a node of type folder in any workspace.
2. Create different child nodes with different types
3. Publish node created in step 1 with subnodes
4. Go to Public instance and check that the order is not preserved

Repeat these steps without changing node types, now order is preserved in the public instance.

The attached AUTHOR.png shows test-ordering node with different types and test-ordering2 with same type. In the PUBLIC picture it can be seen that the order is not preserved.

It seems that info.magnolia.publishing.sender.AbstractSender.getOrderingInfo(Node) method takes into account the type of node by calling info.magnolia.jcr.util.NodeUtil.getSiblingsAfter(Node, String) 

This problem was already fixed in Activation Module (not yet applied to Publishing). Check linked tickets.