We use Aspose Words for Java v11.11.0 for converting docs to pdf format. We have this issue, when converting, Aspose changes font type of our head as you can see in the doc sample we attached.
But when we were using v10.6.0 we were working fine.
Please respond as soon as posible, we are having this problem in production environment.
I am not able to reproduce the reported issue on my end using the latest version of Aspose.Words for Java v13.1. Please have a look at the attached output PDF document which was generated during the verification of issue on our side. I would suggest you to please upgrade to the latest version of Aspose.Words for Java v13.1. You can download it from here.
Hope this helps. Please feel free to ask if you have any more queries.