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Unplanned
Last Updated: 05 Mar 2026 11:59 by Ryan
WordsProcessing: PdfFormatProvider: Justified text alignment is not respected for specific text content
Created by: Ryan
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
WordsProcessing: PdfFormatProvider: Justified text alignment is not respected for specific text content
PdfFormatProvider: Justified text alignment is not respected for specific text content.
Unplanned
Last Updated: 26 Feb 2026 12:48 by Mario
PdfProcessing: Expose internal GrayColor object
Created by: Mario
Comments: 0
Category: PdfProcessing
Type: Feature Request
4
PdfProcessing: Expose internal GrayColor object
Expose internal GrayColor object.
Completed
Last Updated: 04 Mar 2026 13:48 by ADMIN
Release 2026.1.304 (2026 Q1)
ADMIN
PdfProcessing: StackOverflowException is thrown with a specific document containing StructureTree
Created by: Martin
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: StackOverflowException is thrown with a specific document containing StructureTree
The issue is that the document contains incorrect data that the CrossReferenceStream.LoadReferences method cannot parse.
Completed
Last Updated: 04 Mar 2026 13:48 by ADMIN
Release 2026.1.304 (2026 Q1)
ADMIN
PdfProcessing: PdfStreamWriter: Apply encoding filter from StreamCompression setting when exporting XObject
Created by: Martin
Comments: 0
Category: PdfProcessing
Type: Feature Request
1
PdfProcessing: PdfStreamWriter: Apply encoding filter from StreamCompression setting when exporting XObject

With the current implementation, the compression setting is omitted:

  • streamWriter.Settings.StreamCompression
Unplanned
Last Updated: 12 Feb 2026 10:45 by Rob
PdfProcessing: Add support for PDF Portfolios
Created by: Rob
Comments: 0
Category: PdfProcessing
Type: Feature Request
2
PdfProcessing: Add support for PDF Portfolios
Add support for PDF Portfolios.
Unplanned
Last Updated: 10 Feb 2026 07:27 by Devron
PdfProcessing: .NET Standard: ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')' during import
Created by: Devron
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: .NET Standard: ArgumentOutOfRangeException: 'Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')' during import
This exception was originally thrown at this call stack:
    System.ThrowHelper.ThrowArgumentOutOfRange_IndexMustBeLessException()
    System.Collections.Generic.List<T>.this[int].get(int)
    Telerik.Windows.Documents.Core.PostScript.Data.PostScriptArray.GetElementAs<T>(int)
    Telerik.Windows.Documents.Core.Fonts.Type1.Type1Format.Dictionaries.Type1PostScriptObject.GetGlyphName(ushort)
    Telerik.Windows.Documents.Core.Fonts.Type1.Type1Format.Type1FontSource.GetGlyphName(ushort)
    Telerik.Windows.Documents.Core.Fonts.Type1.Type1Format.Type1FontSource.GetAdvancedWidthOverride(int)
    Telerik.Windows.Documents.Core.Fonts.FontSource.GetAdvancedWidth(int)
    Telerik.Windows.Documents.Fixed.Model.Fonts.StandardFont.GetActualWidth(Telerik.Windows.Documents.Fixed.Model.Data.CharCode)
    Telerik.Windows.Documents.Fixed.Model.Fonts.SimpleFont.GetWidthOverride(Telerik.Windows.Documents.Fixed.Model.Data.CharCode)
    Telerik.Windows.Documents.Fixed.Model.Fonts.FontBase.GetWidth(Telerik.Windows.Documents.Fixed.Model.Data.CharCode)
Completed
Last Updated: 04 Mar 2026 13:31 by ADMIN
Release 2026.1.304 (2026 Q1)
PdfProcessing: ArgumentNullException: 'Value cannot be null. (Parameter 'source')' when importing a document which structure tree contains null or empty child elements
Created by: Bhaskar
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: ArgumentNullException: 'Value cannot be null. (Parameter 'source')' when importing a document which structure tree contains null or empty child elements
Stacktrace: 
   at System.Linq.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
   at System.Linq.Enumerable.Cast[TResult](IEnumerable source)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructElementObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElement element)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructElementObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElement element)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructElementObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElement element)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructTreeChildrenObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context, StructureElementsCollection childElements)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.MarkedContents.StructTreeRootObject.CopyPropertiesTo(PostScriptReader reader, StructureElementsImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyStructureTreeTo(PostScriptReader reader, IRadFixedDocumentImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.DocumentStructure.DocumentCatalog.CopyPropertiesTo(PostScriptReader reader, IRadFixedDocumentImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.RadFixedDocumentImportContext.BeginImportOverride()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.BaseImportContext.BeginImport(Stream pdfFileStream)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Import.PdfImporter.Import(Stream input, IPdfImportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.<>c__DisplayClass19_0.<ImportOverride>b__0()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.ExceptionHandling.ExecutionHandler.TryHandleExecution[E](Action operation)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Import(Stream input, Nullable`1 timeout)
Completed
Last Updated: 04 Mar 2026 13:48 by ADMIN
Release 2026.1.304 (2026 Q1)
PdfProcessing: High memory consumption when importing a document with many Path/Image elements
Created by: Mattia
Comments: 0
Category: PdfProcessing
Type: Bug Report
2
PdfProcessing: High memory consumption when importing a document with many Path/Image elements
When importing a document with many Path elements, the memory consumption could be very high.
Unplanned
Last Updated: 29 Jan 2026 08:03 by Janson
PdfProcessing: Provide support for signing multiple Signature fields
Created by: Janson
Comments: 0
Category: PdfProcessing
Type: Feature Request
0
PdfProcessing: Provide support for signing multiple Signature fields
When signing more than one signature field, the previous signatures are invalidated.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: PdfStreamSigner: Introduce TimeStamp server support.
Created by: Janson
Comments: 0
Category: PdfProcessing
Type: Feature Request
1
PdfProcessing: PdfStreamSigner: Introduce TimeStamp server support.
Introduce support for TimeStampServer when using the PdfStreamSigner.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: CryptographicException is thrown when importing AES encrypted document with DocumentInfo
Created by: Jeff
Comments: 2
Category: PdfProcessing
Type: Bug Report
2
PdfProcessing: CryptographicException is thrown when importing AES encrypted document with DocumentInfo
CryptographicException is thrown when importing AES encrypted document with DocumentInfo.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
ADMIN
PdfProcessing: Incorrect annotation border array is rendered instead of being skipped
Created by: Martin
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: Incorrect annotation border array is rendered instead of being skipped

The unexpected border array:

14 0 obj
<< /A 16 0 R /Border [ 10 10 10 60 ] /Rect [ 411 36 565 48 ] /Subtype /Link /Type /Annot >>
endobj
According to the PDF Specification:

"In PDF 1.0, the array consists of three numbers defining the horizontal corner radius, vertical corner radius, and border width, all in default user space units. If the corner radii are 0, the border has square (not rounded) corners; if the border width is 0, no border is drawn. (See implementation note 81 in Appendix H.)

In PDF 1.1, the array may have a fourth element, an optional dash arraydefining a pattern of dashes and gaps to be used in drawing the border."

Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: InvalidOperationException is thrown when parser incorrectly interprets delimiter characters within literal strings as structural tokens instead of string data
Created by: David
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: InvalidOperationException is thrown when parser incorrectly interprets delimiter characters within literal strings as structural tokens instead of string data
InvalidOperationException is thrown when the parser incorrectly interprets delimiter characters within literal strings as structural tokens instead of string data.
Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
ADMIN
PdfProcessing: Some characters are not properly resolved from the Encoding differences table
Created by: Martin
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: Some characters are not properly resolved from the Encoding differences table
Specific characters (" ' ") are not properly resolved from the Encoding differences table.
Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
PdfProcessing: PdfFormatProvider: InvalidOperationException: 'isContentReleased' when exporting
Created by: Muhammad
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: PdfFormatProvider: InvalidOperationException: 'isContentReleased' when exporting

Introduced in version 2025.4.1104.

Works OK in the previous version.

StackTrace: 

   at Telerik.Windows.Documents.Utilities.Guard.ThrowExceptionIfTrue(Boolean condition, String message)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.IndirectObject.get_Content()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExportContext.BeginExportIndirectObject(IndirectObject indirectObject, Int64 offset)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.IndirectObject.Write(PdfWriter writer, IPdfExportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.WritePendingIndirectObjects(IPdfExportContext context, PdfWriter writer)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.WriteFontsFromContext(PdfWriter writer, IPdfExportContext context)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Export.PdfExporter.Export(IRadFixedDocumentExportContext context, Stream output)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.<>c__DisplayClass21_0.<ExportOverride>b__0()
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.ExceptionHandling.ExecutionHandler.TryHandleExecution[E](Action operation)
   at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider.ExportOverride(RadFixedDocument document, Stream output, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Common.FormatProviders.FormatProviderBase`1.Export(T document, Stream output, Nullable`1 timeout)

Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
PdfProcessing: Handle the import of documents with invalid offset and no space before dictionary keys
Created by: David Henry
Comments: 0
Category: PdfProcessing
Type: Feature Request
0
PdfProcessing: Handle the import of documents with invalid offset and no space before dictionary keys
Handle the import of documents with invalid offset and no space before dictionary keys.
Completed
Last Updated: 21 Jan 2026 14:56 by ADMIN
Release 2025.4.1319 (2025 Q4)
PdfProcessing: Add support for Border annotation property
Created by: Jan
Comments: 0
Category: PdfProcessing
Type: Feature Request
3
PdfProcessing: Add support for Border annotation property
Add support for Border annotation property.
Completed
Last Updated: 13 Feb 2026 09:39 by ADMIN
Release 2026.1.210 (2026 Q1)
PdfProcessing: SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping
Created by: Vitalii
Comments: 0
Category: PdfProcessing
Type: Bug Report
9
PdfProcessing: SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping
SkiaImageFormatProvider: Blacked out images due to incorrectly resolved clipping.
Duplicated
Last Updated: 22 Dec 2025 15:24 by ADMIN
PdfProcessing: Add support for ShadingType 1
Created by: Vitalii
Comments: 3
Category: PdfProcessing
Type: Feature Request
2
PdfProcessing: Add support for ShadingType 1

Hello support team,

We faced an exception that ShadingType 1 is not supported. Can you please confirm that this is expected?

Regards,
Vitalii

Completed
Last Updated: 18 Dec 2025 10:14 by ADMIN
PdfProcessing: Handle the import of incrementally updated documents with invalid cross-reference offsets
Created by: David Henry
Comments: 0
Category: PdfProcessing
Type: Feature Request
0
PdfProcessing: Handle the import of incrementally updated documents with invalid cross-reference offsets
Handle the import of incrementally updated documents with invalid cross-reference offsets.
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