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Completed
Last Updated: 24 Jun 2026 11:22 by ADMIN
WordsProcessing: PdfFormatProvider: NotSupportedImageFormatException is thrown during DOCX to PDF conversion in Linux
Created by: Graeme
Comments: 0
Category: WordsProcessing
Type: Bug Report
0
WordsProcessing: PdfFormatProvider: NotSupportedImageFormatException is thrown during DOCX to PDF conversion in Linux
NotSupportedImageFormatException is thrown during DOCX to PDF conversion in Linux.
Completed
Last Updated: 24 Jun 2026 10:48 by ADMIN
Release 2026.2.624 (2026 Q2)
PdfProcessing: Optimize the exporting of fonts
Created by: Nitya
Comments: 0
Category: PdfProcessing
Type: Feature Request
3
PdfProcessing: Optimize the exporting of fonts
When importing and merging documents the fonts are extracted directly from the files and can duplicate if the files contain the same fonts.
Completed
Last Updated: 24 Jun 2026 10:48 by ADMIN
Release 2026.2.624 (2026 Q2)
SpreadProcessing: ArgumentException thrown when file contains format string with modificator [Color]
Created by: Mandip Kaila
Comments: 4
Category: SpreadProcessing
Type: Bug Report
2
SpreadProcessing: ArgumentException thrown when file contains format string with modificator [Color]
Opening a file where there is a format string with modificator [Color11] causes an ArgumentException "Invalid modificator" This prevents the file from opening.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordsProcessing: PdfFormatProvider: StackOverflowException is thrown during PDF export of a document with a Header/Footer containing a page break
Created by: Jonas
Comments: 0
Category: WordsProcessing
Type: Bug Report
0
WordsProcessing: PdfFormatProvider: StackOverflowException is thrown during PDF export of a document with a Header/Footer containing a page break

StackOverflowException is thrown during PDF export of a document with a Header/Footer containing a page break.

Workaround: Remove page break from all header/footer paragraphs, or from a specific paragraph.

Header defaultHeader = section.Headers.Default;

if (defaultHeader != null)
{
    foreach (var item in defaultHeader.Blocks)
    {
        if (item is Paragraph paragraph)
        {
            paragraph.PageBreakBefore = false;
        }
    }
}

Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordsProcessing: PdfFormatProvider: OutOfMemoryException is thrown during PDF export of a document that has floating shapes whose wrap zones block vertical progress
Created by: Jonas
Comments: 0
Category: WordsProcessing
Type: Bug Report
0
WordsProcessing: PdfFormatProvider: OutOfMemoryException is thrown during PDF export of a document that has floating shapes whose wrap zones block vertical progress
PdfFormatProvider: OutOfMemoryException is thrown during PDF export of a document that has floating shapes whose wrap zones block vertical progress.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordsProcessing: Width property defined in style is not respected in the <colgroup> <col> element
Created by: Babu
Comments: 2
Category: WordsProcessing
Type: Bug Report
1
WordsProcessing: Width property defined in style is not respected in the <colgroup> <col> element

When imported in the WordsProcessing model, the current HTML doesn't respect the defined column width and all columns have identical width:

    <colgroup>
        <col span="1" style="width: 33.3302%;">
        <col span="1" style="width: 17.5658%;">
        <col span="1" style="width: 49.104%;">
    </colgroup>

Observed result:

Expected result:

Workaround: use the width property as follows: 

    <colgroup>
        <col span="1" width="33.3302%">
        <col span="1" width="17.5658%">
        <col span="1" width="49.104%">
    </colgroup>
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordsProcessing: HtmlFormatProvider: HtmlFormatProvider: Multiple CSS classes on an element are not correctly resolved when converted to inline styles
Created by: Kruparao
Comments: 0
Category: WordsProcessing
Type: Bug Report
0
WordsProcessing: HtmlFormatProvider: HtmlFormatProvider: Multiple CSS classes on an element are not correctly resolved when converted to inline styles

Multiple CSS classes on an element are not correctly resolved when converted to inline styles.

Before:

.TelerikNormal {font-family: Calibri;font-size: 14.6666666666667px;margin-top: 0px;margin-bottom: 0px;line-height: 100%;color: #000000;}
.TelerikHeading3 {font-family: Calibri Light;font-size: 22.6666666666667px;}
<p class="TelerikNormal TelerikHeading3"><span>Test</span></p>

Due to order priority, the TelerikHeading3 values override the TelerikNormal values. The font-size becomes 22.6666666666667px.

Convert:

provider.ExportSettings.StylesExportMode = StylesExportMode.Inline;
After:
<p style="font-family: Calibri;font-size: 14.6666666666667px;margin-top: 0px;margin-bottom: 0px;line-height: 100%;color: #000000;"><span>Test</span></p>
Result: TelerikHeading3 and its properties are ignored and not applied during the conversion to inline styles. The font-size is now 14.6666666666667px.

 

Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
ADMIN
WordsProcessing: HtmlFormatProvider: Cell background is not inherited from table background
Created by: Deyan
Comments: 0
Category: WordsProcessing
Type: Bug Report
2
WordsProcessing: HtmlFormatProvider: Cell background is not inherited from table background 
In case table cell doesn't have directly applied background, it should inherit the background of its parent table.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordProcessing: PdfFormatProvider: Export accessible PDFs
Created by: Łukasz
Comments: 0
Category: WordsProcessing
Type: Feature Request
3
WordProcessing: PdfFormatProvider: Export accessible PDFs
PdfFormatProvider: Export accessible PDFs.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordsProcessing: DocxFormatProvider: Arabic text's Font size and font family changes after export
Created by: ismayil
Comments: 0
Category: WordsProcessing
Type: Bug Report
0
WordsProcessing: DocxFormatProvider: Arabic text's Font size and font family changes after export

This is the code for import/export which result is illustrated below:

            string inputFilePath = "test1.doc";
            Telerik.Windows.Documents.Flow.Model.RadFlowDocument document;
            Telerik.Windows.Documents.Flow.FormatProviders.Doc.DocFormatProvider doc_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Doc.DocFormatProvider();
            using (Stream input = File.OpenRead(inputFilePath))
            {
                document = doc_provider.Import(input, TimeSpan.FromSeconds(10));
            }

            Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider docx_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
            string outputFilePath = "Exported.docx";
            using (Stream output = File.OpenWrite(outputFilePath))
            { 
                docx_provider.Export(document, output, TimeSpan.FromSeconds(10));
            }

            Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });

Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
WordsProcessing: PdfFormatProvider: OutOfMemoryException is thrown during PDF export of a document that has paragraph indent larger than cell width
Created by: Jonas
Comments: 0
Category: WordsProcessing
Type: Bug Report
0
WordsProcessing: PdfFormatProvider: OutOfMemoryException is thrown during PDF export of a document that has paragraph indent larger than cell width
PdfFormatProvider: OutOfMemoryException is thrown during PDF export of a document that has paragraph indent larger than cell width.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
ADMIN
SpreadStreamProcessing: Add support for Filters
Created by: Nikolay Demirev
Comments: 5
Category: SpreadStreamProcessing
Type: Feature Request
13
SpreadStreamProcessing: Add support for Filters 
Provide a way to export filters.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
SpreadProcessing: System.InvalidOperationException: 'The axes are incorrectly paired.'
Created by: Eric Moreau
Comments: 0
Category: SpreadProcessing
Type: Bug Report
1
SpreadProcessing: System.InvalidOperationException: 'The axes are incorrectly paired.'

An error occurs while importing an XLSX document with charts. Here is the stack trace:

   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorkbookImportContext.PairSeriesGroupsWithAxes()
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.PlotAreaElement.CopyPropertiesTo(IOpenXmlImportContext context, DocumentChart chart)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.ChartElement.CopyPropertiesTo(IOpenXmlImportContext context, DocumentChart chart)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.ChartSpaceElement.OnAfterRead(IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.OpenXmlElementBase.Read(IOpenXmlReader reader, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Parts.ChartPart.Import(IOpenXmlReader reader, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Parts.OpenXmlPartBase.Import(Stream stream, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.ImportPartFromArchive(ZipArchiveEntry zipEntry, PartBase part, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.Import(Stream input, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.WorkbookFormatProviderBase.Import(Stream input, Nullable`1 timeout)

Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
PdfProcessing: Unable to obtain the value of incrementally updated fields
Created by: Michael
Comments: 0
Category: PdfProcessing
Type: Bug Report
7
PdfProcessing: Unable to obtain the value of incrementally updated fields
Unable to obtain the value of incrementally updated fields. The original value of the fields is resolved instead.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
SpreadProcessing: Empty number format for the chart axis is lost on import/export
Created by: Rory
Comments: 0
Category: Telerik Document Processing
Type: Bug Report
1
SpreadProcessing: Empty number format for the chart axis is lost on import/export

Workaround: this is the missing part after the export:

Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
SpreadProcessing: XlsxFormatProvider: System.NullReferenceException: 'Object reference not set to an instance of an object.' when importing a worksheet with images in .NET Standard
Created by: Joon-Sae
Comments: 0
Category: SpreadProcessing
Type: Bug Report
1
SpreadProcessing: XlsxFormatProvider: System.NullReferenceException: 'Object reference not set to an instance of an object.' when importing a worksheet with images in .NET Standard
This is the stack trace: 
   at Telerik.Windows.Documents.Spreadsheet.Utilities.SpreadsheetHelper.UpdateFloatingImageSize(FloatingShapeBase shape)
   at Telerik.Windows.Documents.Spreadsheet.Utilities.SpreadsheetHelper.CalculateRotatableShapeBoundingRect(Point position, FloatingTransformableShape shape)
   at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.CalculateShapeBoundingRect(FloatingShapeBase shape)
   at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.UpdateShapesSizeAndPosition()
   at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.Measure(CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.Measure(CellIndex frozenCellIndex, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.Model.Workbook.UpdateWorksheetLayout(RadWorksheetLayout worksheetLayout, Worksheet worksheet, Boolean isForPrinting, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.Model.Workbook.GetWorksheetLayout(Worksheet worksheet, Boolean isForPrinting, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.Model.Workbook.GetWorksheetLayout(Worksheet worksheet, Boolean isForPrinting)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorksheetImportContext.ImportShapesSizes()
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorksheetImportContext.EndImport(XlsxWorkbookImportContext workbookContext)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorkbookImportContext.EndImport()
   at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.Import(Stream input, IOpenXmlImportContext context)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken)
   at Telerik.Windows.Documents.Spreadsheet.FormatProviders.WorkbookFormatProviderBase.Import(Stream input, Nullable`1 timeout)
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
PdfProcessing: Page content is corrupted when merging pages whose content is an array of content streams
Created by: Craig
Comments: 0
Category: Telerik Document Processing
Type: Bug Report
1
PdfProcessing: Page content is corrupted when merging pages whose content is an array of content streams
When using the PdfStreamWriter to write a PdfPageSource whose content is an array of content streams, the resultant content stream contains concatenated graphic state operators. This results in error when loading the document in Acrobat Reader and corrupted page content.
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
PdfProcessing: SkiaImageFormatProvider: NullReferenceException is thrown when rendering a glyph ("H22073") with not found GlyphData
Created by: Dmitri
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: SkiaImageFormatProvider: NullReferenceException is thrown when rendering a glyph ("H22073") with not found GlyphData
Iterate the pages of a PDF document and export each page to an image
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
ADMIN
PdfProcessing: The casing of the font name should not be respected when comparing font names to find from collection
Created by: Tanya
Comments: 0
Category: PdfProcessing
Type: Bug Report
0
PdfProcessing: The casing of the font name should not be respected when comparing font names to find from collection 
This is causing issues when exporting the document to PDF from WordsProcessing - the pdf library tries to create the font, but cannot find it due to a different casing. When importing HTML document, the font-family property is read with small letters. Later, when converting the string containing the value, it is changed to title case. 

This issue will be reproducible with each font containing a name with a letter with casing different than the one of the other letters (exc. first capital letter), for example: Microsoft JhengHei
Completed
Last Updated: 24 Jun 2026 10:31 by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
PdfProcessing: Some signatures are displayed as invalid or unknown.
Created by: Jon
Comments: 0
Category: PdfProcessing
Type: Bug Report
1
PdfProcessing: Some signatures are displayed as invalid or unknown.
Enabling FIPS causes all signatures to be displayed as invalid or unknown. In addition, some signatures are displayed as unknown but Adobe verifies them.
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