Telerik UI for ASP.NET Core

Release History

UI for ASP.NET Core R2 2023 SP1 (version 2023.2.718)

July 19, 2023


  • esbuild does not work with latest Kendo UI for jQuery versions (7395)
  • Missing devDependencies in source code bundle (7374)
  • Error on npm run dev when using vite (7238)


  • DrillDown Charts


  • Wrong placement of validation message for RadioGroup/CheckBoxGroup (7307)


  • DateInput in DatePicker is being wrapped multiple times when setOptions is called (7331)


  • DateInput in DatePicker is being wrapped multiple times when setOptions is called (7331) (7331)


  • DateTimePicker time button is rendered before calendar button in the new rendering
  • Clicking on the Now button of a DateTimePicker does not set the current time. (7301)
  • Missing TimePicker translations in the kendo.messages.en-US.js file (6910)
  • DateTimePicker icon is wrong when repeatedly clicked to view switch (6091)


  • Diagram save button in edit dialog is not working (7379)


  • Alert okMessage does not take effect


  • Missing class k-list-container of DropDownList's popup element (7327)
  • Incorrect k-selected class remains on the first dropdown item of virtual DropDownList when using jQuery 3.4.1+ and setting value through value method (6567)


  • DropDownTree does not comply to ARIA spec and general ARIA requirements (7269)


  • Color tools in Editor should render gradient when the palette option is set to null (7381)


  • FileManager's ContextMenu doesn't render icons through the spriteCssClass field (7372)


  • Displaced loading mask on Grid with endless scrolling
  • CSP not compatible if the Grid's column widths are defined (7434)
  • JS error thrown on filtering Grid via Column Menu's filter (7382)
  • Grid PopUp editor containment doesn't serialize (7291)


  • The columns in MultiColumnComboBox with virtualization are misaligned when text is longer than the column width (7022)


  • Wrong placement of validation message for RadioGroup/CheckBoxGroup (7307) (7307)


  • Add customization means for Scheduler ToolBar
  • Unable to set Scheduler editable window options (7141)


  • SplitButton's arrow-down icon displays incorrectly when the iconClass option is configured (7345)


  • Change event of Spreadsheet's DataSource is not triggered on pressing Delete key (7106)


  • TextArea resizing does not work


  • Missing TimePicker translations in the kendo.messages.en-US.js file (6910) (6910)


  • Multiple Timelines in horizontal mode cannot be navigated
  • Timeline misalignment (6806)


  • ToolBar link buttons (URL property set) must not have role=button


  • TreeList - Enhanced ARIA support and Keyboard navigation support
  • Custom DropDownList editor in TreeList collapses parent item (7370)
  • The imageClass of the TreeList command column has no effect (7298)




  • Export the optional Signature`s Filter property when exporting to a PDF file.
  • Wrong rendering of glyphs with a specific CFF font.
  • An InvalidCastException is thrown when a name start character (\) is followed by a literal string start character (().
  • An Invalid position when the TJ operator array contains empty values.
  • An IndexOutOfRangeException executing CalculateMultidimensionalLinearInterpolationResult method of SampledFunction class.
  • ImageUtils dependencies are not correct.
  • An Unhandled ArgumentNullException is thrown when importing a document with no pages.
  • An unhandled ArgumentException is thrown when importing a document containing CIDFont with negative glyph widths.
  • Text is missing when FontDescriptor is not fully defined.
  • Text is displayed with bigger glyphs for some CidFontType0 fonts with CFF font source.
  • Some Chinese characters cannot be found in s a specific cmap.
  • Slow import of documents containing large images with SMask.
  • Saving a document with a linearized document structure produces a document that fails to load in some viewers.
  • Redact annotations are not displayed correctly when the page is rotated.
  • RadPdfViewer crashes when an exception is thrown asynchronously.
  • PdfViewer's GoToPage method is not working on initial load of PdfViewer when called in DocumentChanged event handler
  • Missing text content caused by handled ArgumenNullException while parsing Type1 font file.
  • Missing Text Characters when Viewing PDF Document.
  • Missing content because handled IndexOutOfRangeException is thrown while decoding stream with RunLengthDecode filter.
  • Missing Annotations when opening a document containing GoTo action with Named Destination.
  • Lines with small length and big thickness are rendered as big squares.
  • KeyNotFoundException is thrown when a destination is missing from the catalog.
  • A KeyNotFoundException is thrown when importing a document with destinations pointing to invalid page references.
  • Images compressed with CCITTFaxDecode with BlackIs1 parameter are rendered with inverted black and white colors.
  • Glyph geometries are rendered disordered when Courier and Custom Open-Sands Type1 fonts are used.
  • Form Fields are not clickable when they appear inside an unsupported annotation.
  • Destinations with null properties don't scroll to the page.
  • Content with Type1 font with MacRomanEncoding is not visualized.
  • CffFontSource does not render apostrophe characters correctly from the FreeSerif font file.
  • Annotations are misplaced when the Page boundaries have offset different than 0.
  • The Helvetica-UltraCompressed font is not parsed correctly and is changed to Helvetica.
  • An InvalidCastException is thrown when importing a document and the endstream is not on a new row.
  • Signature widgets are not imported correctly when the file is signed with safari.
  • Radio buttons and Check boxes are imported deselected when their field does not specify the field value.
  • PdfStreamWriter: Page content is corrupted when merging pages whose content has Predictor 1 set as DecodeParms.
  • The Path is imported with incorrect clipping and color.
  • NullReferenceException is thrown when the appearance of widget annotation is missing.
  • InvalidCastException when importing link annotations that are referenced with indirect reference.
  • Incorrect calculation of line spacing when LineSpacingType is set to Exact or AtLeast and the paragraph split between pages.
  • Generating a document containing Chinese symbols hangs in some specific scenarios.
  • Exporting encrypted RadFixedDocument with Interactive Forms leads to an invalid widget caption and name.
  • Exporting a field with missing Appearances property causes an exception.
  • Bookmark titles are not visible when declared as indirect objects.
  • An ArgumentOutOfRangeException is thrown when importing a Fit Horizontal destination with a missing top value.
  • An ArgumentException is thrown sporadically when exporting a protected document containing a form field.


  • Introduced support for Charts in NET Standard.
  • The NotBetween conditional formatting rule applies the format to all the cells, no matter if the rule is satisfied or not.
  • NullReferenceException is thrown when creating a combo chart with two chart types and three data columns for a series.
  • Exception Invalid data passed is thrown when exporting with DataTableProvider and a column contains text and numbers.
  • DataValidation is corrupted on import and export when the rule uses a formula with string arguments.


  • NullReferenceException when exporting bookmarks spanning more than one paragraph.
  • ArgumentOutOfRangeException when inserting a table right after an empty paragraph using the editor.
  • When a value contains points (w:pos=85.50pt) can't be properly converted.
  • The font fallback mechanism does not find the correct font to display unsupported special characters which results in wrong character rendering or in missing characters.
  • Paragraph properties are not imported from HTML when the paragraph is inside a list item.
  • WordsProcessing: Line breaks in text content are not imported as space from HTML.
  • FormatException when importing a document with start or end values for borders.

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