Thanks for your query. I have managed to reproduce the same issue at my side. I have logged this issue as WORDSNET-6583 in our issue tracking system. You will be notified via this forum thread once this issue is resolved.
We apologize for your inconvenience.
Thanks for your patience. I like to share with you that this issue has been fixed in latest version of Aspose.Words for .NET 15.8.0. Please download it from here:
Please feel free to ask if you have any question about Aspose.Words, we will be happy to help you.