I am able to modify the field correctly and get them to have the correct value. When I export/save the file the form textboxes are all rotated vertically and the only fix I have been able to do is to modify the rotation of the field text in another editor. This kind of ruins the idea of code filling the pdf forms and automating the process. PDFFormatProvider / Telerik Document Processing library is 2022.1.106. I tried rotating the field after value edit to 0,90,etc...and they have all resulted in the similar issue.