Hi Arno,
Thank you for contacting Syncfuison support.
SetFont/ApplyFont doesn’t add new paragraph. We have prepared a sample for your requirement which can be downloaded from the following link.
https://www.syncfusion.com/downloads/support/forum/153423/ze/Font-293348259
Kindly modify the sample to reproduce the issue and share us the same which will be helpful for us to provide a prompt solution at the earliest.
Regards,
Dilli babu.