Compare PDF documents with temporary license gives wrong output layout in .NET

outpute file when finish compare , the output file layout not equal original pdf file. the cells style lost, it became in confusion.
Please see below picture.
Original pdf:
old.png (54.0 KB)

compared output pdf
Image 123.png (52.3 KB)

Code
GroupDocs.Comparison.Comparer comparer = new GroupDocs.Comparison.Comparer();
ComparisonSettings comparisonSettings = new ComparisonSettings();
comparisonSettings.CloneMetadata = new TypeMetadata();
comparisonSettings.DetailLevel = DetailLevel.Low;
comparisonSettings.ShowDeletedContent = true;
comparisonSettings.InsertedItemsStyle.Color = Color.Blue;
comparisonSettings.DeletedItemsStyle.Color = Color.Red;
comparisonSettings.CalculateComponentCoordinates = true;
comparisonSettings.GenerateSummaryPage = true;
ICompareResult result = comparer.Compare(sourceFile, targetFile, comparisonSettings);
result.SaveDocument(outputFile);

Thank you.

@zhentech.wang,

Thank you for your inquiry.
Can you please tell us which version of the API you integrated in your project? Also, we need both source and target files in order to investigate the issue at our end.