Thanks for your posting and using Aspose.Cells for .NET.
We were able to observe this issue using the latest version with the following code. We have logged this issue in our database. We will look into it and resolve this issue. Once, the issue is resolved or we have some other update for you, we will let you know asap.
We have also attached the output pdf for a reference.
Thanks for your posting and using Aspose.Cells for .NET.
We are afraid, there is no update for you at this moment. However, we have logged your comment in our database against this issue. Once, we will have some fix or update for you, we will let you know asap.