Converting to powerpoint creates corrupted file

When opened in powerpoint, it asks to repair and after repairing z order on the first page is wrong. During conversion I also see missing font exceptions (running in debugger), but execution continues. I’m using Aspose.PDF for .Net 19.3.0 and following options:

var options = new PptxSaveOptions();
options.SlidesAsImages = false;
options.TryMergeAdjacentSameBackgroundImages = true;
options.OptimizeTextBoxes = true;
options.SeparateImages = true;
pdf.Save(pptFilePath, options);

Original and converted files attached:

pdf.zip (9.1 MB)

@ezolenko

We have tested the scenario in our environment and were able to reproduce the issue that you have mentioned. Hence, we have logged this as PDFNET-46237 in our issue tracking system for the sake of correction. We will further look into details of the issue and keep you posted with the status of it rectification. Please be patient and spare us little time.

We are sorry for the inconvenience.