NullReferenceException is thrown when importing a tagged document that contains a structure element with a /C attribute class but no /ClassMap.

The signature field preserves information about the time of signing through the TimeOfSigning property of Signature.Properties. However, the DateTime object doesn't keep info about the time zone the document has been signed in. Some customers need to obtain this information.

Handle the import of documents that have an invalid boolean value for the PrintScaling property of ViewerPreferences. The expected value of the /PrintScaling entry is a PDF name object:

/PrintScaling /None

/PrintScaling /AppDefault

When importing such documents, the following exception is thrown: 

InvalidCastException: 'Unable to cast object of type 'Telerik.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfBool' to type 'Telerik.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfName'.'

Excessive text wrapping and row heights due to columns collapsing to excessively narrow widths when the total column width exceeds the table width.

Regression in versions after 2026.3.810.

Workaround: Manually readjust the column Width values.

Table cell content is not displayed after PDF export if cell Preferred Width is too small.

Workaround: Make cell Size(Preferred Width) big enough for the contents to fit.

This missing functionality may be workaround by implementing and registering custom IPdfFilter implementation that decodes JPEG2000 images. The custom decoder may be registered with FiltersManager class and its implementation may be similar to RadPdfViewers JpxDecoder SDK example implementation:

- https://github.com/telerik/xaml-sdk/blob/master/PdfViewer/CustomDecoder/JpxDecoder.cs
- Use a custom JPXDecode filter with RadPdfViewer