Page.Text substituting \0 for "fi" character sequence

[mclagett]

I am seeing the following contents in my document's text:

LastNameLoan O\0cer
Email:EncProd@na\0nc.com

It would appear that the Text property is substituting a \0 when it encounters an "fi" sequence in the document's text. I am using a MemoryStream (instantiated from a byte array) as my parameter to PdfDocument.Open. I have checked that this memory stream creates a valid pdf file when written to a file with the following code:

                var file = new FileStream(".\\testPdf2.pdf", FileMode.Create, FileAccess.Write);
                var memStream = new MemoryStream(uploadedFileByteArray);
                memStream.WriteTo(file);
                file.Close();

I am able to load and view this file in Acrobat Reader. Am using the following code to process this with PdfPig:

using (PdfDocument doc = PdfDocument.Open(memStream))
{
foreach (Page page in doc.GetPages())
{
string pageText = page.Text;
}
}

It is this pageText variable that has the issue identified above and the content of the page is truncated.

Has anyone encountered anything like this?