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Unplanned
Last Updated: 06 Nov 2025 12:31 by Dennis
RichTextBox: Bullet list with several levels is not viewed corectly in WordPad
Created by: Dennis
Comments: 1
Category: RichTextBox
Type: Bug Report
1
RichTextBox: Bullet list with several levels is not viewed corectly in WordPad

RichTextBox: Bullet list with several levels is not viewed correctly in WordPad. 

In Word, this works as expected. When the document is imported into RadRichTextBox, this works as well.

Unplanned
Last Updated: 31 Oct 2025 11:38 by Martin Ivanov
RichTextBox: Add support for SVG import in the HtmlFormatProvider
Created by: Martin Ivanov
Comments: 0
Category: RichTextBox
Type: Feature Request
0
RichTextBox: Add support for SVG import in the HtmlFormatProvider
Currently, if you have img element in the HTML content which points to a link with an SVG image, the SVG is not imported. Instead, the missing image placeholder is displayed. Add support for importing SVG images. 
In Development
Last Updated: 29 Oct 2025 16:16 by ADMIN
Scheduled for 2025 Q4 (November)
RichTextBox: Exceptions occur on loading documents with element tags that don't have direct content but are using opening and closing tags instead of self-closing tags
Created by: Martin Ivanov
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: Exceptions occur on loading documents with element tags that don't have direct content but are using opening and closing tags instead of self-closing tags

The RichTextBox internal logic that imports .docx documents (DocxFormatProvider) doesn't support elements that don't need direct content, but have both start and end tags. Instead such elements should use self-closing tags. 

For example, instead of <w:vertAlign w:val="baseline"></w:vertAlign> it should be <w:vertAlign w:val="baseline"/>

When such element is read during import, issues may occur. Two main known issues here are with the w:vertAlign and Relationship tags.

Using

<w:vertAlign w:val="baseline"></w:vertAlign>

instead of

<w:vertAlign w:val="baseline"/>

throws NullReferenceException with the following stack trace:

System.NullReferenceException: 'Object reference not set to an instance of an object.'
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlHelper.ConvertStringToBaselineAlignment(string value) Line 168 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.SpanStyleImporter.ReadBaselineAlignment(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Parsing.Style style) Line 243 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.SpanStyleImporter.ReadStyle(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Parsing.Style style) Line 88 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.StyleDefinitionsImporter.ReadSpanStyleProperties(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Parsing.Style style) Line 278 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.StyleDefinitionsImporter.ReadStyle() Line 188 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.StyleDefinitionsImporter.Import() Line 67 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.ReadXmlContentFromPackage(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxPartImporterBase importer) Line 430 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.ReadXmlContentAndRelationsFromPackage(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxPartImporterBase importer) Line 406 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.Import() Line 190 C#  
Telerik.Windows.Documents.FormatProviders.OpenXml.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider.Import(System.IO.Stream input) Line 147 C#
Telerik.Windows.Documents.dll!Telerik.Windows.Documents.FormatProviders.DocumentFormatProviderBase.Import(byte[] input) Line 90 C#

Using

<Relationship Id="rId00004" Target="styles.xml" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles"></Relationship>

instead of

<Relationship Id="rId00004" Target="styles.xml" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles"/>

throws KeyNotFoundException with the following stack trace:

KeyNotFoundException: The given key was not present in the dictionary.
    System.ThrowHelper.ThrowKeyNotFoundException() in ThrowHelper.cs
    System.Collections.Generic.Dictionary<TKey, TValue>.this[TKey].get(TKey) in Dictionary.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.PartRelationsImporter.GetRelationByID(string) in PartRelationsImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.GetRelationByID(string) in DocxImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.BuildSection() in MainDocumentImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.BuildBody() in MainDocumentImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.BuildDocument() in MainDocumentImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.Import() in MainDocumentImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.ReadXmlContentFromPackage(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxPartImporterBase) in DocxImporter.cs
    Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.ReadXmlContentAndRelationsFromPackage(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxPartImporterBase) in DocxImporter.cs

To work this around, import the document with the WordsProcessing library. If you need to display it in RadRichTextBox, you can export it again using the WordsProcessing library. This will normalize the tags. Then import it again using the RadDocument's DocxFormatProvider.

 var dplDocxFormatProvider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
 RadFlowDocument flowDocument = dplDocxFormatProvider.Import(File.ReadAllBytes("../../../test.docx"), null);

 var docBytes = dplDocxFormatProvider.Export(flowDocument, null);
 File.WriteAllBytes("../../../modified-doc.docx", docBytes);

 var rtbDocxFormatProvider= new Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider();
 RadDocument document = rtbDocxFormatProvider.Import(File.ReadAllBytes("../../../modified-doc.docx"));

 

In Development
Last Updated: 29 Oct 2025 16:16 by ADMIN
Scheduled for 2025 Q4 (November)
RichTextBox: Document exported to DOCX with 2025 Q2 cannot be opened by 2025 Q1
Created by: Daniel
Comments: 4
Category: RichTextBox
Type: Bug Report
0
RichTextBox: Document exported to DOCX with 2025 Q2 cannot be opened by 2025 Q1

Document exported to DOCX with 2025 Q2 cannot be opened by 2025 Q1 or previous versions.

 

Workaround: Use document processing to fix the document.

var processing_provider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();

var document = processing_provider.Import(File.ReadAllBytes("C:\\Users\\test\\Downloads\\word1.docx"),null);
var bytes_ = processing_provider.Export(document, null);

var rtb_provider = new Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider();
var doc = rtb_provider.Import(bytes_);
radRichTextBox.Document = doc;

In Development
Last Updated: 29 Oct 2025 16:16 by ADMIN
Scheduled for 2025 Q4 (November)
RichTextBox: Importing an HTML that contains an image with align attribute does not apply the alignment
Created by: Stenly
Comments: 0
Category: RichTextBox
Type: Bug Report
1
RichTextBox: Importing an HTML that contains an image with align attribute does not apply the alignment
When importing an HTML string that contains an image, which has an align attribute, the image creation logic on import does not take this attribute's value and apply it.
In Development
Last Updated: 29 Oct 2025 16:16 by ADMIN
Scheduled for 2025 Q4 (November)
RichTextBox: Custom annotations are not rendered correctly when they have no content and are right aligned.
Created by: Mark
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: Custom annotations are not rendered correctly when they have no content and are right aligned.
RichTextBox: Custom annotations are not rendered correctly when they have no content and are right-aligned (gif Attached).  
In Development
Last Updated: 29 Oct 2025 16:16 by ADMIN
Scheduled for 2025 Q4 (November)
RichTextBox: Exporting documents (RadDocument) to docx format produces an invalid file
Created by: Martin Ivanov
Comments: 2
Category: RichTextBox
Type: Bug Report
1
RichTextBox: Exporting documents (RadDocument) to docx format produces an invalid file
Exporting RadDocument to docx format (using the DocxFormatProvider) produces an invalid file. The file is read properly by document viewers like RadRichTextBox or MS Word, but if you open it with "Open XML SDK Productivity Tool for Microsoft Office" or another app that validates documents, the document is treated as invalid.

To work this around, you can import the invalid .docx document using the RadWordsProcessing library (and its RadFlowDocument) and then export it again with RadWordsProcessing.
Unplanned
Last Updated: 17 Oct 2025 08:36 by ADMIN
RichTextBox: Bold/Italic does not work for some font styles
Created by: Swapnil
Comments: 1
Category: RichTextBox
Type: Feature Request
0
RichTextBox: Bold/Italic does not work for some font styles

Bold/Italic does not work for some font styles.

This might be a framework limitation in WPF: https://www.telerik.com/forums/some-fonts-are-not-able-to-bold-italic

Sample fonts list:

  1. Tw Cen MT Condensed Extra Bold (bold/italic)
  2. Tw Cen MT Condensed (bold/italic)
  3. Sitka Text Semibold (italic)
  4. Sitka Subheading Semibold (italic)
  5. Sitka Small Semibold (italic)
  6. Sitka Heading Semibold (italic)
  7. Sitka Display Semibold (italic)
  8. Sitka Banner Semibold (italic)
  9. Segoe UI Variable Text Semibold (italic)
  10. Segoe UI Variable Text Light (bold/italic)
  11. Segoe UI Variable Display Light (bold/italic)
  12. Segoe UI Semilight (bold/italic)
  13. Segoe UI Semibold (bold/italic)
  14. Segoe UI Light (bold/italic)
  15. Segoe UI Black (italic)
  16. Script MT Bold (bold/italic)
  17. Rockwell Condensed (bold/italic)
  18. Rockwell Extra Bold (italic)
  19. Rage Italic (bold/italic)
  20. OCR A Extended (bold/italic)
  21. Nirmala UI Semilight (bold/italic)
  22. Microsoft YaHei UI Light (bold/italic)
  23. Microsoft YaHei Light (bold/italic)
  24. Microsoft JhengHei UI Light (bold/italic)
  25. Microsoft JhengHei Light (bold/italic)
  26. Malgun Gothic Semilight (bold/italic)
  27. Leelawadee UI Semilight (bold/italic)
  28. Gloucester MT Extra Condensed (bold/italic)
  29. Gill Sans Ultra Bold Condensed (bold/italic)
  30. Gill Sans Ultra Bold (bold/italic)
  31. Gill Sans MT Ext Condensed Bold (bold/italic)
  32. Gill Sans MT Condensed (bold/italic)
  33. Franklin Gothic Medium Cond (bold/italic)
  34. Franklin Gothic Heavy (bold/italic)
  35. Franklin Gothic Medium (bold/italic)
  36. Franklin Gothic Demi (bold/italic)
  37. Franklin Gothic Demi Cond (bold/italic)
  38. Franklin Gothic Book (bold/italic)
  39. Dubai Medium (bold/italic)
  40. Dubai Light (bold/italic)
  41. Corbel Light (bold/italic)
  42. Copperplate Gothic Light (bold/italic)
  43. Copperplate Gothic Bold (bold/italic)
  44. Cooper Black (bold/italic)
  45. Cascadia Mono SemiLight (bold/italic)
  46. Cascadia Mono SemiBold (italic)
  47. Cascadia Mono Light (bold/italic)
  48. Cascadia Code SemiLight (bold/italic)
  49. Cascadia Mono ExtraLight (bold/italic)
  50. Cascadia Code SemiBold (italic)
  51. Cascadia Code Light (bold/italic)
  52. Cascadia Code ExtraLight (bold/italic)
  53. Candara Light (bold/italic)
  54. Calibri Light (bold/italic)
  55. Britannic Bold (bold/italic)
  56. Bodoni MT Condensed (bold/italic)
  57. Bodoni MT Black (italic)
  58. Bernard MT Condensed (bold/italic)
  59. Bahnschrift SemiLight Condensed (bold/italic)
  60. Bahnschrift SemiLight SemiConde (bold/italic)
  61. Bahnschrift SemiLight (bold/italic)
  62. Bahnschrift SemiBold (bold/italic)
  63. Bahnschrift SemiBold SemiConden (bold/italic)
  64. Bahnschrift SemiCondensed (bold/italic)
  65. Bahnschrift SemiBold Condensed (bold/italic)
  66. Bahnschrift Light Condensed (bold/italic)
  67. Bahnschrift Light  (bold/italic)
  68. Bahnschrift Condensed (bold/italic)
  69. Arial Rounded MT Bold (bold/italic)
  70. Arial Narrow (bold/italic)
  71. Arial Black (italic)

 

Unplanned
Last Updated: 15 Oct 2025 11:25 by Martin Ivanov
RichTextBox: Allow auto update of the hyperlink navigation address when the caret leaves the text span with the address
Created by: Martin Ivanov
Comments: 0
Category: RichTextBox
Type: Feature Request
0
RichTextBox: Allow auto update of the hyperlink navigation address when the caret leaves the text span with the address
Currently, when you write down a web address (e.g. https://www.google.com) and move the caret outside of the address text (usually by pressing Space or Enter), the text is automatically wrapped in a hyperlink. Any further updates on the text won't update the underlying hyperlink address.

Add an option to auto-detect changes in the hyperlink text. This is valid only when the text matches the underlying link.
Unplanned
Last Updated: 14 Oct 2025 07:49 by Swapnil
RichTextBox: Exception after rapidly editing the document and then performing multiple undo operations
Created by: Swapnil
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: Exception after rapidly editing the document and then performing multiple undo operations
Exception after rapidly editing the document and then performing multiple undo operations. 
Unplanned
Last Updated: 17 Sep 2025 14:55 by Martin Ivanov
RichTextBox: Add support for export/import of the FloatingImageBlock TextWrapping setting to HTML
Created by: Martin Ivanov
Comments: 0
Category: RichTextBox
Type: Feature Request
1
RichTextBox: Add support for export/import of the FloatingImageBlock TextWrapping setting to HTML
Add support for export and import of the TextWrapping setting of the FloatingImageBlock to HTML. 
Duplicated
Last Updated: 12 Sep 2025 08:57 by ADMIN
RichTextBox: The ShowPlaceholder property of Content Control is not handled correctly when importing docx files
Created by: Caesar
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: The ShowPlaceholder property of Content Control is not handled correctly when importing docx files
The ShowPlaceholder property of Content Control is not handled correctly when importing .docx files.
Unplanned
Last Updated: 22 Aug 2025 06:07 by ADMIN
RichTextBox: HtmlformatProvider: Nested tables with empty cells are not correctly imported.
Created by: Naval
Comments: 10
Category: RichTextBox
Type: Bug Report
0
RichTextBox: HtmlformatProvider: Nested tables with empty cells are not correctly imported.
Nested tables with empty cells are not correctly imported. 
Unplanned
Last Updated: 15 Aug 2025 13:39 by ADMIN
RichTextBox: Add option for custom tooltips for hyperlinks
Created by: Iva
Comments: 4
Category: RichTextBox
Type: Feature Request
6
RichTextBox: Add option for custom tooltips for hyperlinks 
Currently, the only customization that can be performed is using HyperlinkToolTipFormatString property of RadRichTextBox, which sets the format for all hyperlinks in the document of the control. It would be nice if it were possible to be able to set different tooltips.
Completed
Last Updated: 12 Aug 2025 10:30 by ADMIN
Release 2025.3.812 (2025 Q3)
RichTextBox: When selecting spans, some of which belong to a list, the numbering option does not allow for adding them in the existing list
Created by: Stenly
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: When selecting spans, some of which belong to a list, the numbering option does not allow for adding them in the existing list
Performing selection on spans, some of which are present in a list, does not allow for including all of them in the list. Instead, the current list will have to be removed and reapplied to all selected spans.
Unplanned
Last Updated: 16 Jul 2025 08:52 by UNAI
RichTextBox: Tables lose their preferred width after changing the field display mode to name
Created by: UNAI
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: Tables lose their preferred width after changing the field display mode to name
Tables lose their preferred width after changing the field display mode to name.
Unplanned
Last Updated: 10 Jul 2025 11:13 by Swapnil
RichTextBox: RtfFormatProvider: The \page tag is not respected on import.
Created by: Swapnil
Comments: 0
Category: RichTextBox
Type: Bug Report
0
RichTextBox: RtfFormatProvider: The \page tag is not respected on import.
The \page tag is not respected on import. We should insert new lien o a page break.
Unplanned
Last Updated: 10 Jul 2025 09:17 by ADMIN
RichTextBox: ArgumentNullException when using FindReplaceDialog when the document contains footnotes
Created by: Vladimir
Comments: 2
Category: RichTextBox
Type: Bug Report
1
RichTextBox: ArgumentNullException when using FindReplaceDialog when the document contains footnotes
The editor used for the footnotes causes ArgumentNullException when trying to pass the dialog to it.
Declined
Last Updated: 18 Jun 2025 12:51 by ADMIN
RadRichTextBox Change Tracking: RevisionInfo.Date is missing the seconds
Created by: Daniel
Comments: 2
Category: RichTextBox
Type: Bug Report
0
RadRichTextBox Change Tracking: RevisionInfo.Date is missing the seconds

Can be reproduced in the demo:

  • Open the default document in the radrichtextbox demo
  • Activate change tracking (button "Track Changes")
  • Make a modification to the document (delete a paragraph)
  • Hover your mouse over the delete text: the date in the revision info. has always ":00" for the seconds

In our processes, it is very important to know if a change happened before or after another action. If all the revisions have zero seconds, it's impossible to determine the order of the changes when they happened in the same minute.

This is not a new bug introduce in SP2: it was there in SP1.

Unplanned
Last Updated: 04 Jun 2025 14:42 by Stenly
RichTextBox: Add support for QQ Pinyin IME
Created by: Stenly
Comments: 0
Category: RichTextBox
Type: Feature Request
1
RichTextBox: Add support for QQ Pinyin IME
Currently, the RadRichTextBox supports only the MS Pinyin. We could add support for QQ Pinyin.
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