@yuweiming314,
Regarding the linked issue WORDSNET-18422, we have completed the work on your issue and concluded to close this issue as ‘Not a Bug’. Please see below the analysis details.
Different versions of MS Word show this document differently. This happens because docDefaults missing pPrDefault tag. MS Word loads some predefined document defaults depending on MS Word application version in this case.
To control this behavior, we should specify LoadOptions.MswVersion.
Default value is MsWordVersion.Word2007, so, please, specify MsWordVersion.Word2016.
To get desired PDF output, please use this code:
LoadOptions lo = new LoadOptions();
lo.MswVersion = MsWordVersion.Word2016;
Document doc = new Document("E:\\error_page_for_aspose\\error_page_for_aspose.doc", lo);
doc.Save("E:\\error_page_for_aspose\\19.4-fonts-installed.pdf");
Hope, this helps.