Section Header does not include any children after parsing PDF file

### Question
I am trying to use the Docling Package to extract the content of a pdf file.
In the documentation for docling document, it says that section headers will include their sections text in their children attribute.
However, if my text includes a section header and following text belonging to that section, the output from docling sets the parent of both elements to "#/body". The section headers children are empty.
Is this feature not available for PDF parsing? Or is there a setting in the Pipeline options that I am missing?

This is the basic PDF file I am using for the parsing. I am using the standard configuration for the PDF pipeline.
[header_test.pdf](https://github.com/user-attachments/files/24098685/header_test.pdf)