Adding \r to the doc genrates + at the end of line

In order to add data to a PDF file in a specific Template, we used this code when creating the doc to add a string that contains `\r\n' :

PdfContentByte Cb = PdfWriter.GetInstance(doc, sourceDocumentStream.AsStream()).DirectContent;

xPos = txt.align == TemplateTextAlign.left ? xPos : doc.PageSize.Width - xPos;

foreach (var line in txt.text.Split(new char[] { '\n' }, StringSplitOptions.None))
{
cb.ShowTextAligned(txt.align == TemplateTextAlign.left ? Element.ALIGN_LEFT : Element.ALIGN_RIGHT, line, xPos, yPos, 0);
yPos -= 15;
}
cb.EndText();

But when reading the doc, we had some '+' added automatically at the end of the lines, you can see it on the pictures.
Would you please helps us to solve this problem.
Thanks.

Can you please provide pdfs to test (one before the modification and one after)?