Recently Updated
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 15:15
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
Expander
Type:
Feature Request
Add a property or another mechanism to disable the fade expand/collapse animation of RadExpander in the Windows11 theme.
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:
15 Dec 2025 13:56
by Stenly
Created by:
Stenly
Comments:
0
Category:
Buttons
Type:
Feature Request
Currently, with the Windows 11 theme, the animation is applied via DoubleAnimationUsingKeyFrames, which sets the Width and Height properties of the element that represents the thumb of the RadToggleSwitchButton to 14px, which does not take into account the ThumbWidth/ThumbHeight properties.
We can improve the animation applied to the thumb for the mouse-over state to take into account the values of the ThumbWidth/ThumbHeight and properties.
We can improve the animation applied to the thumb for the mouse-over state to take into account the values of the ThumbWidth/ThumbHeight and properties.
Unplanned
Last Updated:
15 Dec 2025 11:28
by Stenly
Created by:
Stenly
Comments:
0
Category:
ComboBox
Type:
Bug Report
Typing Korean characters in the edit box causes characters to be missing when the autocomplete is shown.
For example, typing the combination to display the "단" character, pressing the "ㅊ" character, will display the autocomplete for items that contain it; however, pressing another key to create a combination representing the "체" causes the "ㅊ" to be omitted, and only the "ㅔ" is displayed.
For example, typing the combination to display the "단" character, pressing the "ㅊ" character, will display the autocomplete for items that contain it; however, pressing another key to create a combination representing the "체" causes the "ㅊ" to be omitted, and only the "ㅔ" is displayed.
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:
08 Dec 2025 09:58
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
Licensing
Type:
Bug Report
The licensing watermark overlay gets displayed over Visual Studio when a Telerik WPF control gets hosted in the designer of a WinForms project.
Unplanned
Last Updated:
05 Dec 2025 12:47
by Stenly
Created by:
Stenly
Comments:
0
Category:
PivotGrid
Type:
Bug Report
When a maximized window hosts a RadPivotGrid instance, hovering over a cell at the bottom of the control will cause the tooltip to flicker.
Unplanned
Last Updated:
04 Dec 2025 00:27
by Jake Randolph
Created by:
Stenly
Comments:
1
Category:
TimeLine
Type:
Bug Report
Resetting the ItemsSource property results in binding errors that could reduce the performance of the control.
Unplanned
Last Updated:
03 Dec 2025 10:13
by ADMIN
Created by:
Svitlana
Comments:
3
Category:
TreeListView
Type:
Bug Report
Steps to reproduce:
1. Click filter icon in column
2. Enter invalid value in filter input
3. Press Filter, the value gets underlined, suggesting some kind of error.
4. Click the place marked 1 and then 2.
This time, it seems a message appears about the cause of the error, but it doesn’t fit inside the control.
Unplanned
Last Updated:
02 Dec 2025 15:23
by Stenly
Created by:
Stenly
Comments:
0
Category:
PivotGrid
Type:
Feature Request
For the Spanish culture, some of the localization strings are for the German culture.
The following resource keys are the ones containing wrong values:
- PivotInlineFieldList_ValuesEmptyText
- PivotInlineFieldList_RowsEmptyText
- PivotInlineFieldList_ColumnsEmptyText
- PivotInlineFieldList_FiltersEmptyText
- Pivot_AggregateSum
- PivotFieldList_SetSumAggregate
- PivotFieldList_Top10Sum
- PivotFieldList_StringFormatDescription
To work around this, you could introduce a custom LocalizationManager and override the GetStringOverride method.
More information about this suggestion can be found here.
Unplanned
Last Updated:
26 Nov 2025 17:04
by Eljay
Created by:
Martin Ivanov
Comments:
1
Category:
ChartView
Type:
Feature Request
The feature needs to cover functionality as follows: The logarithmic axis has an exponent step (1, 10, 100, 1000) and the current ticks support of the axis only plots evenly distributed ticks. Clients, however, sometimes need to display unevenly distributed ticks (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and so on).
Unplanned
Last Updated:
14 Nov 2025 09:55
by Stenly
Created by:
Stenly
Comments:
0
Category:
Menu
Type:
Bug Report
The arrow button of a RadMenuItem is not highlighted when the mouse is over.
Unplanned
Last Updated:
14 Nov 2025 09:11
by Stenly
Created by:
Stenly
Comments:
0
Category:
PivotGrid
Type:
Bug Report
When the selection is enabled and the pivot field list is in inline mode, the selection overlay is misaligned.
Unplanned
Last Updated:
10 Nov 2025 11:52
by ADMIN
Created by:
Martin Ivanov
Comments:
1
Category:
TreeListView
Type:
Bug Report
One of the following two exceptions occur when the BindingOperations.EnableCollectionSynchronization() is used with the ItemsSource of RadTreeListView:
- System.InvalidOperationException: 'Collection was modified; enumeration operation may not execute.'
- System.NullReferenceException: 'Object reference not set to an instance of an object.'
When using the EnableCollectionSynchronization, the corresponding items control should allow updates of the ItemsSource collection on different threads. This is valid if the requirements to use the EnableCollectionSynchronization method are met.
The exception stack traces are:
InvalidOperationException
at System.ThrowHelper.ThrowInvalidOperationException_InvalidOperation_EnumFailedVersion() in /_/src/libraries/System.Private.CoreLib/src/System/ThrowHelper.cs:line 432
at System.Collections.Generic.List`1.Enumerator.MoveNext() in /_/src/libraries/System.Private.CoreLib/src/System/Collections/Generic/List.cs:line 1130
at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
at Telerik.Windows.Data.EnumerableExtensions.<SelectRecursive>d__15`1.MoveNext()
at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
at Telerik.Windows.Data.HierarchicalCollectionViewBase.PopulateInternalList(IQueryable view)
at Telerik.Windows.Data.QueryableCollectionView.get_InternalList()
at Telerik.Windows.Data.HierarchicalCollectionViewBase.get_InternalCount()
at Telerik.Windows.Data.DataItemCollection.get_Item(Int32 index)
at Telerik.Windows.Controls.GridView.Rows.GetRowItemsAtRange(Int32 startIndex, Int32 endIndex)
at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.RealizeRows(Int32 startIndex, Int32 endIndex, Double& verticalOffset, HashSet`1& realizedRows)
at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.MeasureOverride(Size availableSize)
at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size availableSize)NullReferenceException at Telerik.Windows.Data.QueryableCollectionView.InternalGetItemAt(Int32 index) in Telerik.Windows.Data\QueryableCollectionView.cs:line 3081 at Telerik.Windows.Controls.GridView.Rows.GetRowItemsAtRange(Int32 startIndex, Int32 endIndex) at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.RealizeRows(Int32 startIndex, Int32 endIndex, Double& verticalOffset, HashSet`1& realizedRows) at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.MeasureOverride(Size availableSize) at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size availableSize)
To work this around dispatch the updates of the ItemsSource collection to the main UI thread.
Dispatcher.BeginInvoke(new Action(() =>
{
// add/remove items from the source collection
}));
Unplanned
Last Updated:
10 Nov 2025 11:41
by Martin Ivanov
Created by:
Martin Ivanov
Comments:
0
Category:
PDFViewer
Type:
Bug Report
The edited value of an interactive form field (for example TextBox) is not committed when the form goes outside of the viewport while still in edit mode.
Unplanned
Last Updated:
07 Nov 2025 11:13
by Stenly
Created by:
Stenly
Comments:
0
Category:
Docking
Type:
Bug Report
Dragging between an inner RadDocking instance to the outer RadDocking is possible, but the reverse is not.
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:
06 Nov 2025 14:50
by Stenly
Created by:
Stenly
Comments:
0
Category:
GridView
Type:
Feature Request
Currently, the frozen columns' count will be updated if the dragged splitter passes half of the width of the column on which it is over. We could introduce support for modifying this threshold to either increase it or decrease it.