Problem with Folder.get_public_tree_all()

Dear developers,

I found a problem with the method Folder.get_public_tree_all().

I expect this method to return all public content including content in
subpublications. This works as expected when I call this method on a folder
containing the publications:
FolderContainingPublications.get_public_tree_all().
However, when I call this method on FolderContainingPublications's parent
(i.e. ParentFolder.get_public_tree_all()), the public content contained in
the subpublications isn't returned.

Can you confirm this behavior?

Regards,
Benno