Can you please share the resultant PDF documents that you are getting at your end, so that we can properly understand the issue. In fact during my testing, I have downloaded the Simplified Arabic font but the Arabic text is not properly being displayed but the bullet do appear. If possible, can you please share the font file as well. We apologize for this inconvenience. PS, I have used Aspose.Pdf for .NET 6.2.0 to test this scenario.
I have managed to reproduce the issue and its been logged in our issue tracking system as PDFNEWNET-30780. We will further look into the details of this problem and will keep you updated on the status of correction. Please be patient and spare us little time. We apologize for this inconvenience.