Thanks for your inquiry. After an initial test with Aspose.Words for .NET 14.10.0, I was unable to reproduce this issue on my side (please see attached out-awnet-14.10.0.pdf). I would suggest you please upgrade to the latest version of Aspose.Words. You can download it from the following link. I hope, this helps.
While using the latest version of Aspose.Words i.e. 14.10.0, I managed to reproduce this issue on my side. I have logged this issue in our bug tracking system. The ID of this issue is WORDSNET-11118. Your request has also been linked to this issue and you will be notified as soon as it is resolved. Sorry for the inconvenience.