The attached docx file has rendered the attached pdf file with unexpected blue highlighting in two bulleted lists within the document. Stepping through each node in the docx did not reveal any cause for the blue highlights that appear in the pdf but not the docx.
The code below was used to generate the pdf:
Dim oLic As New Aspose.Words.License
Dim oAsposeDoc As New Aspose.Words.Document("c:\test\in.docx")
Dim oProps As New Aspose.Words.Saving.PdfSaveOptions()
oProps.PreserveFormFields = True
oProps.PrettyFormat = True