When getting the hash code of CFF (Compact Font Format) font`s UnderlineThickness and there is no such value set in the font file the default value should be returned but an exception is thrown: NullReferenceException: 'Object reference not set to an instance of an object.'

When parsing a CFF Type1 font a NullReferenceException is thrown.

After the import-export of a specific document, the paths are thinner and the corners of the path figure are not rounded:

 

When searching text in a specific document the results are not as expected. They are slightly shifted:

 I am getting a null exception when trying to import an document. The specified error is Value cannot be null. (Parameter 'action').

OverflowException when importing a document with a signature that has an empty Location string.

Darker and lower quality image export on macOS.

Introduce support for UnShrinking - Method 1.

Signature omitted after exporting PDF to an image.   

SMask is not applied correctly.

Wrong font file loaded when CidType2Font with Standard name.

When rendering an encoded image for a second time the image data seems corrupted and an exception is thrown: InvalidOperationException: 'Illegal character.'

Nested tables cause cropped borders of the child table. The outside borders of the child table are half the width.

When concurrent accessing the FontsRepository`s RegisterFont (private) method from different threads an exception is thrown: System.IndexOutOfRangeException: 'Index was outside the bounds of the array.'

Endless loop when trying to parse image data between ID and EI keywords.

When loading a PDF generated with PdfProcessing in PDF Accessibility Checker 2021 (PAC) an exception is thrown: "Object reference not set to an instance of an object".

It is reproducible with all PdfComplianceLevel export options.

InvalidCastException: 'Unable to cast object of type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfArray' to type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfName'.'
when parsing a specific document.

InvalidCastException caused by colorspace defined as nested indirect objects.

Unable to cast object of type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.IndirectReference' to type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfName'.

Importing a document containing an EI keyword not followed by space or return leads to an endless loop and the document is not imported successfully.

Expected:

Actual:

Enabling FIPS causes all signatures to be displayed as invalid or unknown. In addition, some signatures are displayed as unknown but Adobe verifies them.