Is this problem solved? I have the same problem, I used aspose.words net and version is 18.5. It was said that it has been solved in 19.10 update from this link (Word and PPT to PDF: Some characters are missing in rendering (.NET) - #14 by dunghnguyen), is that true?
@zengna1986 Yes, the problem in the mentioned thread has been fixed in 19.10 version of Aspose.Words. So please try using newer version on your side.
If the problem still persists, please attach your input and output documents here for testing. We will check the issue on our side and provide you more information.