Dear rambach,
Thanks for waiting.
Due to the complexity of the issue, we need more time to investigate it. Considering this situation, there are other workarounds which might help you solve your issue quickly.
1) use LoadFromHTML method in Spire.PDF.
https://www.e-iceblue.com/Tutorials/Spi ... rself.html2) use New Plugin and Spire.PDF.
https://www.e-iceblue.com/Tutorials/Spi ... lugin.html3) use Paragraph.AppendHTML method in Spire.Doc, as Spire.Doc also supports converting html string to PDF.
Hope this helps. And once there is any progress about the issue you submitted, we will let you know.
Sincerely,
Betsy
E-iceblue support team