It appears that the PDF export in the dotnet core/standard version is broken. No font data is retained. Instead all fonts are changed to the default font, font weight, and style. The only font property that is retained through conversion is the size. I noticed that there are others complaining about this in the Framework version but I have not seen any progress in fixing the problem or work around suggested. Is there a way to export to PDF a flex document with some control over the font weight and style?