Do you have any solution to this yet?
https://forum.aspose.com/t/content-are-pushed-up-to-page-after-docx-to-pdf-conversion-using-net/212405
We experience issues with Aspose PDF adding strange page breaks not present in the original Word file. When using Word’s built in PDF Converter to convert from docx to PDF everything works just fine.
This issue occurs from time to time in docx files containing several (> 20) pages.
@NNoren The problem might occur becaue the font used in your source DOCX document are not available in the environment where the document is rendered to PDF. Aspose.Words needs the fonts used in the document to build document layout upon conversion to PDF. If Aspose.Words cannot find the font used in the document, the font is substituted. This might lead into fonts mismatch and document layout differences. You can implement IWarningCallback to get notifications when font substitution is performed.
Also, could you please attach your problematic document here for testing along with output PDF document? We will check the issue and provide you more information.