Hello
Thanks for the new XpsSaveOptions in 24.8!
Just tested, seems that the invalid signature issue still exists, am I right? 
@australian.dev.nerds The problem is logged as WORDSNET-25909 and is not yet resolved. Please accept our apologies for your inconvenience.
The issues you have found earlier (filed as WORDSNET-25909) have been fixed in this Aspose.Words for .NET 24.10 update also available on NuGet.