Unplanned
Last Updated:
24 Dec 2025 10:59
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Bug Report
ArgumentException occurs when using the voice typing feature of Windows (started with the Windows Key + H key combo) to convert speech to text in RadRichTextBox.
Exception stacktrace:
System.ArgumentException: 'Requested distance is outside the content of the associated document.'PresentationFramework.dll!System.Windows.Documents.TextPointer.TextPointer(System.Windows.Documents.TextContainer textContainer, int offset, System.Windows.Documents.LogicalDirection direction) PresentationFramework.dll!System.Windows.Documents.TextContainer.CreatePointerAtOffset(int offset, System.Windows.Documents.LogicalDirection direction) PresentationFramework.dll!System.Windows.Documents.TextParentUndoUnit.Do() PresentationFramework.dll!MS.Internal.Documents.UndoManager.Redo(int count) PresentationFramework.dll!System.Windows.Documents.TextStore.RedoQuietly(int count) PresentationFramework.dll!System.Windows.Documents.TextStore.SetFinalDocumentState(MS.Internal.Documents.UndoManager undoManager, System.Collections.Stack imeChangeStack, int appChangeCount, int imeSelectionAnchorOffset, int imeSelectionMovingOffset, int appSelectionAnchorOffset, int appSelectionMovingOffset) PresentationFramework.dll!System.Windows.Documents.TextStore.HandleCompositionEvents(int previousUndoCount) PresentationFramework.dll!System.Windows.Documents.TextStore.GrantLockWorker(MS.Win32.UnsafeNativeMethods.LockFlags flags) PresentationFramework.dll!System.Windows.Documents.TextStore.RequestLock(MS.Win32.UnsafeNativeMethods.LockFlags flags, out int hrSession)
Unplanned
Last Updated:
24 Dec 2025 08:36
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
Improve the performance of the document import. Currently, large documents take a lot of time to get imported with the DocxFormatProvider, even if not assigned to the RadRichTextBox control.
Unplanned
Last Updated:
18 Dec 2025 10:13
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
FormatException is thrown during the import of a table coming from a docx document when the application culture is "sv-SE". This happens when the column width in the document is a floating point number (ex: 120.65). The Swedish culture uses "," as decimal separator and " " as the number group separator, which makes any invariant decimal value (like 120.65) invalid during standard parsing (ex: float.Parse("120.65")).
Stacktrace:
FormatException: The input string '4514.5' was not in the correct format. at System.Single.Parse(String s) Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.TableImporter.ImportTableGrid(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Parsing.Style style) Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.TableImporter.Import(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Parsing.Style parentStyle) Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.BuildTable(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Parsing.Style parentStyle) Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.BuildBody() Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.BuildDocument() Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.MainDocumentImporter.Import()Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.ReadXmlContentFromPackage(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxPartImporterBase importer) Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.ReadXmlContentAndRelationsFromPackage(Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxPartImporterBase importer) Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.Import.DocxImporter.Import() Telerik.Windows.Controls.RichTextBox.dll!Telerik.Windows.Documents.FormatProviders.OpenXml.Docx.DocxFormatProvider.Import(System.IO.Stream input)
To work this around, switch to InvariantCulture during the import and return the original culture after that.
var cultureCache = Thread.CurrentThread.CurrentCulture;
Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;
Thread.CurrentThread.CurrentUICulture = System.Globalization.CultureInfo.InvariantCulture;
var provider= new DocxFormatProvider();
rtb.Document = provider.Import(stream);
Thread.CurrentThread.CurrentCulture = cultureCache;
Thread.CurrentThread.CurrentUICulture = cultureCache;
Unplanned
Last Updated:
09 Dec 2025 10:29
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Bug Report
Double clicking a word starting with a non-letter symbol selects the symbol as well, instead only selecting the word.
"(hello)"
In the example above, if you double click on the word "hello", this should select only the word. However, it selects also the opening bracket. The final selection becomes "(hello".
Note that the issue occurs also if you click in the end of the word "hello" and use Ctrl+Shift+LeftArrow to select it to the beginning.
"(hello)"
In the example above, if you double click on the word "hello", this should select only the word. However, it selects also the opening bracket. The final selection becomes "(hello".
Note that the issue occurs also if you click in the end of the word "hello" and use Ctrl+Shift+LeftArrow to select it to the beginning.
Unplanned
Last Updated:
31 Oct 2025 11:38
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
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.
Unplanned
Last Updated:
07 Nov 2025 07:36
by ADMIN
Created by:
Dennis
Comments:
2
Category:
RichTextBox
Type:
Bug Report
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:
15 Oct 2025 11:25
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
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.
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
Created by:
Swapnil
Comments:
0
Category:
RichTextBox
Type:
Bug Report
Exception after rapidly editing the document and then performing multiple undo operations.
Unplanned
Last Updated:
17 Sep 2025 14:55
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
Add support for export and import of the TextWrapping setting of the FloatingImageBlock to HTML.
Unplanned
Last Updated:
17 Oct 2025 08:36
by ADMIN
Created by:
Swapnil
Comments:
1
Category:
RichTextBox
Type:
Feature Request
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:
- Tw Cen MT Condensed Extra Bold (bold/italic)
- Tw Cen MT Condensed (bold/italic)
- Sitka Text Semibold (italic)
- Sitka Subheading Semibold (italic)
- Sitka Small Semibold (italic)
- Sitka Heading Semibold (italic)
- Sitka Display Semibold (italic)
- Sitka Banner Semibold (italic)
- Segoe UI Variable Text Semibold (italic)
- Segoe UI Variable Text Light (bold/italic)
- Segoe UI Variable Display Light (bold/italic)
- Segoe UI Semilight (bold/italic)
- Segoe UI Semibold (bold/italic)
- Segoe UI Light (bold/italic)
- Segoe UI Black (italic)
- Script MT Bold (bold/italic)
- Rockwell Condensed (bold/italic)
- Rockwell Extra Bold (italic)
- Rage Italic (bold/italic)
- OCR A Extended (bold/italic)
- Nirmala UI Semilight (bold/italic)
- Microsoft YaHei UI Light (bold/italic)
- Microsoft YaHei Light (bold/italic)
- Microsoft JhengHei UI Light (bold/italic)
- Microsoft JhengHei Light (bold/italic)
- Malgun Gothic Semilight (bold/italic)
- Leelawadee UI Semilight (bold/italic)
- Gloucester MT Extra Condensed (bold/italic)
- Gill Sans Ultra Bold Condensed (bold/italic)
- Gill Sans Ultra Bold (bold/italic)
- Gill Sans MT Ext Condensed Bold (bold/italic)
- Gill Sans MT Condensed (bold/italic)
- Franklin Gothic Medium Cond (bold/italic)
- Franklin Gothic Heavy (bold/italic)
- Franklin Gothic Medium (bold/italic)
- Franklin Gothic Demi (bold/italic)
- Franklin Gothic Demi Cond (bold/italic)
- Franklin Gothic Book (bold/italic)
- Dubai Medium (bold/italic)
- Dubai Light (bold/italic)
- Corbel Light (bold/italic)
- Copperplate Gothic Light (bold/italic)
- Copperplate Gothic Bold (bold/italic)
- Cooper Black (bold/italic)
- Cascadia Mono SemiLight (bold/italic)
- Cascadia Mono SemiBold (italic)
- Cascadia Mono Light (bold/italic)
- Cascadia Code SemiLight (bold/italic)
- Cascadia Mono ExtraLight (bold/italic)
- Cascadia Code SemiBold (italic)
- Cascadia Code Light (bold/italic)
- Cascadia Code ExtraLight (bold/italic)
- Candara Light (bold/italic)
- Calibri Light (bold/italic)
- Britannic Bold (bold/italic)
- Bodoni MT Condensed (bold/italic)
- Bodoni MT Black (italic)
- Bernard MT Condensed (bold/italic)
- Bahnschrift SemiLight Condensed (bold/italic)
- Bahnschrift SemiLight SemiConde (bold/italic)
- Bahnschrift SemiLight (bold/italic)
- Bahnschrift SemiBold (bold/italic)
- Bahnschrift SemiBold SemiConden (bold/italic)
- Bahnschrift SemiCondensed (bold/italic)
- Bahnschrift SemiBold Condensed (bold/italic)
- Bahnschrift Light Condensed (bold/italic)
- Bahnschrift Light (bold/italic)
- Bahnschrift Condensed (bold/italic)
- Arial Rounded MT Bold (bold/italic)
- Arial Narrow (bold/italic)
- Arial Black (italic)
Unplanned
Last Updated:
16 Jul 2025 08:52
by UNAI
Created by:
UNAI
Comments:
0
Category:
RichTextBox
Type:
Bug Report
Tables lose their preferred width after changing the field display mode to name.
Unplanned
Last Updated:
10 Jul 2025 11:13
by Swapnil
Created by:
Swapnil
Comments:
0
Category:
RichTextBox
Type:
Bug Report
The \page tag is not respected on import. We should insert new lien o a page break.
Unplanned
Last Updated:
04 Jun 2025 14:42
by Stenly
Created by:
Stenly
Comments:
0
Category:
RichTextBox
Type:
Feature Request
Currently, the RadRichTextBox supports only the MS Pinyin. We could add support for QQ Pinyin.
Unplanned
Last Updated:
10 Mar 2025 14:56
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Bug Report
It seems that the first time a Center TextAlignment is applied to the selection, its length is cached. Because of this, when the selection content (text) changes the length is not updated, thus the text doesn't align properly. It aligns accord to the initial length of the context. The content doesn't update also if the alignment is reset.
To work this around, avoid the FlowNoWrap layout mode and use only Flow.
Unplanned
Last Updated:
03 Mar 2025 14:30
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
Many document elements (like Footer, Header, Note, Comments, etc.) have their own RadDocument instance that serves as their body. These child documents are part of the main RadDocument assigned as the Document of RadRichTextBox.
Currently, to access the child RadDocument elements, you should iterate each different element of the main RadDocument and collect its Body property value.
Add a method to easily collect the child RadDocuments, similar to how the EnumerateChildrenOfType<T> method works. Currently the EnumerateChildrenOfType<T> method doesn't work for searching RadDocument, so you can consider extending this already existing API.
Currently, to access the child RadDocument elements, you should iterate each different element of the main RadDocument and collect its Body property value.
Add a method to easily collect the child RadDocuments, similar to how the EnumerateChildrenOfType<T> method works. Currently the EnumerateChildrenOfType<T> method doesn't work for searching RadDocument, so you can consider extending this already existing API.
Unplanned
Last Updated:
27 Feb 2025 14:30
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Feature Request
Add localization strings that can be used with the RadRichTextBoxRibbonUI control. Also, add the localization resources in the demos.
Unplanned
Last Updated:
11 Feb 2025 12:34
by Stenly
Created by:
Stenly
Comments:
0
Category:
RichTextBox
Type:
Feature Request
The "Borders and Shading" dialog of MS Word allows you to specify a shader, which is currently not available as a functionality in the RadRichTextBox control. We could include such an option.
Unplanned
Last Updated:
11 Feb 2025 09:51
by Stenly
Created by:
Stenly
Comments:
0
Category:
RichTextBox
Type:
Feature Request
Currently, the AdjustShape method of RadRichTextBox is internal, which contradicts with the information in the documentation. We could expose this method, as well as its related API.
Unplanned
Last Updated:
10 Feb 2025 13:10
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Bug Report
The issue reproduces when track changes is enabled and new text is entered. After waiting some time and pressing the Backspace on the keyboard in order to delete a character, nothing happens. You should press the Backspace a second time in order to make the deletion work. After that you can delete the content normally.
The waiting time before pressing the Backspace is usually until the next minute of the clock comes. For example, you can write something at 14:55 and wait until 14:56. Then, press Backspace.
If you check the Output pane of Visual Studio you will see the following assertion failure message printed:
---- DEBUG ASSERTION FAILED ---- at Telerik.Windows.Documents.Model.RadDocumentEditor.DeleteTrackChanges(Boolean deletePrevious) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\Model\RadDocumentEditor_Editing.cs:line 693 at Telerik.Windows.Documents.Model.RadDocumentEditor.Delete(Boolean deletePrevious) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\Model\RadDocumentEditor_Editing.cs:line 85 at Telerik.Windows.Controls.RadRichTextBox.Telerik.Windows.Documents.Model.IDocumentEditor.Delete(Boolean deletePrevious) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\UI\RadRichTextBox.cs:line 4890 at Telerik.Windows.Controls.RadRichTextBox.Delete(Boolean deletePrevious) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\UI\RadRichTextBox.cs:line 4866 at Telerik.Windows.Documents.RichTextBoxCommands.DeleteCommand.ExecuteOverride(Object parameter) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\RichTextBoxCommands\DeleteCommand.cs:line 57 at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommandBase.Execute(Object parameter, Boolean focusCaret) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\RichTextBoxCommands\RichTextBoxCommandBase.cs:line 316 at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommandBase.Execute(Object parameter) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\RichTextBoxCommands\RichTextBoxCommandBase.cs:line 285 at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxRoutedCommand.Execute(Object parameter, RadRichTextBox radRichTextBox) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\RichTextBoxCommands\RoutedCommands\RichTextBoxRoutedCommand.cs:line 57 at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxRoutedCommand.CommandBindingHelper.CommandBinding_Executed(Object sender, ExecutedRoutedEventArgs e) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\RichTextBoxCommands\RoutedCommands\RichTextBoxRoutedCommand.cs:line 17 at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e) at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute) at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e) at System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e) at System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted) at System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated) at System.Windows.Input.RoutedCommand.Execute(Object parameter, IInputElement target) at System.Windows.Input.RoutedCommand.System.Windows.Input.ICommand.Execute(Object parameter) at Telerik.Windows.Documents.UI.Extensibility.DefaultInputHandler.HandleInput(RadRichTextBox richTextBox, PreviewEditorKeyEventArgs e) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\RichTextBoxCommands\RoutedCommands\DefaultInputHandler.cs:line 54 at Telerik.Windows.Controls.RadRichTextBox.HandlePresenterKeyDown(PreviewEditorKeyEventArgs e) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\UI\RadRichTextBox.cs:line 4612 at Telerik.Windows.Documents.UI.DocumentPresenterBase.HandleKeyDown(KeyEventArgs e) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\UI\DocumentPresenterBase.cs:line 859 at Telerik.Windows.Documents.UI.DocumentPresenterBase.OnPreviewKeyDown(KeyEventArgs e) in C:\PersonalFiles\Git\wpf\Controls\RichTextBox\Core\UI\DocumentPresenterBase.cs:line 805
Unplanned
Last Updated:
24 Jan 2025 17:15
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
RichTextBox
Type:
Bug Report
When the exported document contains a very precise indent values, these are saved using scientific notation, which is unsupported in MS Word. Opening the file in Word results in the following error: "Word experienced an error trying to open the file."
Here is an example of the troublesome setting in the body of the produced document:
<w:ind w:firstLine="6.420405952667352E-06" w:left="76.53543090820312" w:right="0" />To work this around, you can open the exported document with the WordsProcessing library. This will give you a RadFlowDocument object which then can be exported to a file again. This will save the indent values properly in the new document.
var dplProvider = new Telerik.Windows.Documents.Flow.FormatProviders.Docx.DocxFormatProvider();
using (var inputStream = File.OpenRead("../../../originalFile.docx"))
{
Telerik.Windows.Documents.Flow.Model.RadFlowDocument flowDoc = dplProvider.Import(inputStream, TimeSpan.FromSeconds(5));
using (var outputStream = File.OpenWrite("../../../convertedFile.docx"))
{
dplProvider.Export(flowDoc, outputStream, TimeSpan.FromSeconds(5));
}
}
Or if you use the RichTextBox document model only to create documents in code (without using the RadRichTextBox control), you can replace the code with the WordsProcessing API.