Completed
Last Updated: 13 Jan 2026 01:42 by ADMIN

Bug report

When a border is applied and there are frozen rows/columns the border appears splitted with a white lin in the middle.

Reproduction of the problem

  1. Open the Dojo example.

Current behavior

The bottom border and the right border are split with a white line in the middle.

Expected/desired behavior

The border should appear entirely filled with the selected color.

Environment

  • Kendo UI version: 2022.2.510
  • Browser: [all ]
Completed
Last Updated: 13 Jan 2026 01:41 by ADMIN

The documentation for the Kendo UI MultiSelect widget states that the user can highlight the next/previous item using RIGHT/LEFT when the selection popup is closed. This works as expected. However, if the user then presses TAB and moves the focus somewhere else, the item remains highlighted.

Since the highlight only indicates that certain actions can be executed on the item, it should be removed in such a case as the actions are no longer executable. This can easily be reproduced with the keyboard navigation sample:

  • Select a few items
  • press LEFT
  • press TAB

 

Completed
Last Updated: 13 Jan 2026 01:40 by ADMIN
Created by: omti
Comments: 0
Category: Menu
Type: Bug Report
0

Bug report

If a Popup is open and you click a Menu item, the Menu prevents the Popup from closing automatically.

Reproduction of the problem

  1. Open this Dojo example - https://dojo.telerik.com/IrEYAqaK/2
  2. Click the Open/Close button
  3. Hover the Menu item and click the sub-item.

Current behavior

The Menu prevents the Popup from closing

Expected/desired behavior

The Popup should close when the Menu item is clicked.

Environment

  • Kendo UI version: 2022.2.621
  • Browser: [all]
Completed
Last Updated: 13 Jan 2026 01:36 by ADMIN
Created by: Zion
Comments: 2
Category: Form
Type: Bug Report
1

Bug report

A Form group label encoded option cannot be set to false.

Reproduction of the problem

  1. Open this Dojo example - https://dojo.telerik.com/eGEqEbEw/8

Current behavior

The HTML is not decoded

Expected/desired behavior

The HTML in the text configuration should be decoded

Environment

  • Kendo UI version: 2022.2.621
  • Browser: [all]
Completed
Last Updated: 13 Jan 2026 01:36 by ADMIN
Created by: Michael D
Comments: 6
Category: ColorPicker
Type: Bug Report
0
The Kendo UI ColorPicker's contrastTool shows the contrast ratios necessary to reach a certain accessibility level. While the current contrast ratio itself is localized, the thresholds for the AA and AAA levels are not. For languages like German, this means that for the ratio, "," is used as a decimal separator while the thresholds below use ".".
Completed
Last Updated: 13 Jan 2026 01:30 by ADMIN
Created by: Mark
Comments: 0
Category: TaskBoard
Type: Bug Report
1

Bug report

In Kendo Form custom attributes can be added using the items.attributes option. However, when the same option is used in the nested Form for editing the cards in the TaskBoard the custom attribute is not added.

Reproduction of the problem

  1. Open the Dojo
  2. Edit a card and inspect the Name input

Current behavior

screenshot
The custom attribute is added in the Form, but not when it is used for editing the TaskBoard cards.

Expected/desired behavior

The items.attributes option should add an attribute in the TaskBoard editable form.

Environment

  • Kendo UI version: 2022.2.621
  • Browser: [all ]
Completed
Last Updated: 12 Jan 2026 13:11 by ADMIN

Bug report

Color style is not preserved for the font tag in the Editor

Reproduction of the problem

  1. Open this Dojo example - https://dojo.telerik.com/ucUxOLej/10
  2. Change the color of the text
  3. Press the Test button to console log the Editor value

Current behavior

The color style is not preserved

Expected/desired behavior

The color style should be preserved.

Environment

  • Kendo UI version: 2022.2.621
  • Browser: [all]
Completed
Last Updated: 08 Jan 2026 02:15 by ADMIN

Bug report
ValueAxis.labels.template function invokes twice when Chart is bound to data source

Reproduction of the problem

Check the following Dojo: https://dojo.telerik.com/oJUGixUy/4

Inspect the console

Expected/desired behavior
ValueAxis labels template function shall invoke just one time.

Corner case:

If ValueAxis.labels.font is specified template function is invoked correctly only once.

valueAxis: {
                labels: {
                  // With the font commented out, chart labels get resolved twice
                  font: '11px Arial, Helvetica, sans-serif',
                  template: shortLabels
                }
              },

Environment
**Kendo UI version: [all]
**jQuery version: [all]
**Browser: [all]

Completed
Last Updated: 08 Jan 2026 02:15 by ADMIN
Created by: Jonas
Comments: 1
Category: Data Source
Type: Bug Report
0

See DoJo

This calls the DataSource read() method 10 times, but after 10 seconds only 2 of them are resolved (and actually only 2 requests are recorded in dev tools).

This is really annoying when relying on logic in a .then() block, because it is never called in the remaining cases.

Completed
Last Updated: 08 Jan 2026 02:14 by ADMIN
Created by: Syed Mustafa
Comments: 0
Category: PDFViewer
Type: Bug Report
0

Bug report

In PDFViewer, underlines increase size when zooming in/out.

Reproduction of the problem

  1. Open the PDFViewer Basic Usage demo - https://demos.telerik.com/kendo-ui/pdfviewer/index
  2. Open the attached file.
  3. Zoom in to 300% and then out to 50% several times.

Current behavior

The underlines increase their size.

Expected/desired behavior

The underlines should remain the same.

Environment

  • Kendo UI version: 2022.1.119
  • Browser: [all]
Completed
Last Updated: 08 Jan 2026 02:13 by ADMIN

I am running into inconsistencies when using the toolbar Search input of a File Manager object after navigating to new folders.  

Simple dojo for reference - https://dojo.telerik.com/aPOtiXex/2

Steps to reproduce

  1. Click on "Folder1" in the treeview.
  2. In the Toolbar Search, enter the text "Sub 1001".  This will correctly filter the displayed items.
  3. Click on "Sub 1001" in the treeview.  Notice that the search filter is still in place, but that it is not applied to the current folder view.
  4. In the Toolbar Search, remove the text 1 character at a time.  Notice that as you remove characters in the Search input, the filter IS applied to the current folder view.  Continue removing characters until the Search input is empty.
  5. Click on "Folder1" in the treeview.  Notice that the contents of the folder are STILL filtered as if the Search filter was "Sub 1001", even though Search input is currently empty.
  6. In the Toolbar Search, add 1 space character, then remove it.  Notice that this finally clears the filter applied to the folcer in step #2.

I am not sure what the best answer for this scenario would be.  Maybe navigating to a new folder should clear the search filter criteria in the toolbar and clear any applied filter criteria to the previous folder?  Or maybe the toolbar search input should be reset to accurately reflect the current applied filter for the folder on navigate?  Something good for your dev team to discuss, but it is clear that the current implementation will create some confusion for users.

Completed
Last Updated: 08 Jan 2026 02:13 by ADMIN
Created by: Michael D
Comments: 0
Category: Kendo UI for jQuery
Type: Bug Report
0

Bug report

ContextMenu allows having focused and hovered items simultaneously.

Reproduction of the problem

1. Open the Dojo
2. Right-click to open the ContextMenu and hover over the first item.
3. Start navigating in the ContextMenu with the down arrow without moving the cursor

Current behavior

There is an item marked with 'k-hover' class and an item marked with 'k-focus' class.
image

Expected/desired behavior

It is supposed to have a single active item in the ContextMenu.

Environment

  • Kendo UI version: 2022.1.412
  • Browser: [all ]
Completed
Last Updated: 08 Jan 2026 02:12 by ADMIN
Created by: FA
Comments: 0
Category: Editor
Type: Bug Report
0

Bug report

When text is hihlighet in Rwad-Only Editor and the user tries to paste a text, the highlighted text dissapears.

Reproduction of the problem

  1. Open the Dojo
  2. Copy some text
  3. Highlight part of the text in the Editor and try to paste using Ctrl + V

Current behavior

Currently, the highlighted text dissapers

Expected/desired behavior

The highlighted text should not dissapear and the content of the Editor should remain unchanged.

Workaround

kendo.ui.editor.Clipboard.fn.onpaste = function(){
        if (this.editor.body.contentEditable === "false" || this.editor.body.contentEditable === "inherit" ) {
          return;
        }
      }

Dojo

Environment

  • Kendo UI version: 2022.1.412
  • Browser: [all ]
Completed
Last Updated: 08 Jan 2026 02:07 by ADMIN

Test Environment:

OS: Windows_11
Version: 21H2
OS Build: 22000.795

Browser: Version 103.0.1264.71 (Official Build) (64-bit)

Prerequisite steps:

1. Go to system settings.

2. Navigate to 'Accessibility' and activate it.

3. Navigate to 'Contrast theme' and activate it.

4. Select 'Desert/Aquatic' High Contrast theme in the combo box.

Repro Steps:

1. Open given URL https://demos.telerik.com/kendo-ui/colorpicker/index?_ga=2.176601965.933052354.1656022269-1325185890.1643853544 in Edge Browser.

2. Navigate to ‘Edit’ button using tab key and activate it.

3.Observe that issue.

Actual Behavior:

The Color for each series isn't shown in the Series legend or when Editing the series, but the graph does show the series colored correctly. Occurs in both Aquatic (High Contrast Black) and Desert (High Contrast White) modes.

Expected Behavior:

The series colors and color picker should be visible in both high contrast modes.

 

Completed
Last Updated: 08 Jan 2026 02:07 by ADMIN

Bug report

When virtualization is enabled in the MultiColumnComboBox and the user scrolls down in the popup to load new items sometimes an item that is not actually hovered is highlighted as hovered (the 'k-hover' class is applied).

Reproduction of the problem

  1. Open the Dojo
  2. Scroll down to load new items. Note, that the behavior is not consistent and is not reproducible every time.

Current behavior

Sometimes random item that is not hovered has the 'k-hover' class.
screencast - https://www.screencast.com/t/KXhG7SBkE6

Expected/desired behavior

Items that are not hovered should not have the k-hover class and should not be highlighted as hovered.

Environment

  • Kendo UI version: 2022.2.802
  • Browser: [all ]
Completed
Last Updated: 08 Jan 2026 02:06 by ADMIN

Bug report

If you select a text in the Editor, the ForeColor value is not updated to match the color of the selected text.

Reproduction of the problem

  1. Open this Dojo example - https://dojo.telerik.com/IHAGOfom/6
  2. Select the first line
  3. Select a color from the tool
  4. Select the second line

Current behavior

The value of the ForeColor tool is not updated to match the second line

Expected/desired behavior

The ForeColor value should change based on the selected text

Environment

  • Kendo UI version: 2022.3.913
  • Browser: [all]
Completed
Last Updated: 08 Jan 2026 02:01 by ADMIN

Bug report

Scenario 1: When you first select an invalid file and then a valid one, the upload button appears but does nothing.

Scenario 2: When you select a valid file and then an invalid one, if you hit the upload button, the widget will try to upload the invalid one and produce a server error.

Reproduction of the problem

Scenario 1

  1. Open this demo - https://demos.telerik.com/kendo-ui/upload/index
  2. Select a .PNG or another invalid file.
  3. Select a PDF ( or another valid file)

Scenario 2

  1. Open this Demo - https://demos.telerik.com/kendo-ui/upload/index
  2. Select a PDF ( or another valid file)
  3. Select a PNG ( or another invalid file)
  4. Press Upload button

Current behavior

Scenario 1
The Button appears but does nothing

Scenario 2
The widget attempts to Upload the invalid file and produces an error

Expected/desired behavior

Upload of invalid files shouldn't occur and no errors should be thrown;
A non-responding Upload button shouldn't appear.

Environment

  • Kendo UI version: 2022.3.913
  • Browser: [all]
Completed
Last Updated: 08 Jan 2026 02:00 by ADMIN

Bug report

When date grouping is enabled in the Agenda view and the groups have different count off events, an incorrect event is returned in the change event hanlder.

Reproduction of the problem

  1. Open the Dojo or Dojo 2
  2. Click on an event in the last column

Current behavior

  1. An alert with the id of the event should appear. However, currently wrong id that belongs to a different event is displayed.

Expected/desired behavior

The correct id of the selected event schould be returned in the change event hanlder.

Environment

  • Kendo UI version: 2022.3.913
  • Browser: [all]
Completed
Last Updated: 08 Jan 2026 02:00 by ADMIN

Bug report
MediaPlayer Toolbar does not react to touch input in iPadOS 15.7 and Safari

Reproduction of the problem

Go to https://docs.telerik.com/kendo-ui/controls/media/mediaplayer/multiple-sources

Click on Preview

Touch the MediaPlayer to show the toolbar. /no toolbar is shown/

Expected/desired behavior
The toolbar shall appear on touch input

Environment
Kendo UI version: [all]

Browser: Safari

Completed
Last Updated: 08 Jan 2026 01:59 by ADMIN
Created by: Simon
Comments: 0
Category: PDFViewer
Type: Bug Report
1

Bug report

When the PDFViewer is created and a file is loaded using the fromFile method a new thread will be created. That thread remains in memory and doesn't get destroyed when the entire widget is destroyed.
$("#pdfViewer").data("kendoPDFViewer").destroy(); $("#pdfViewer").empty();

Reproduction of the problem

  1. Open the Dojo
  2. Open the 'Memory' tab in the Developer tools
  3. Click the 'Create' and then click the 'Destroy' button

Current behavior

That created thread remains in memory and doesn't get destroyed.

Expected/desired behavior

The thread should get destroyed when the widget is destroyed.

###Workaround
A possible workaround:
kendoPDFViewer.processor.pdf.loadingTask.destroy();

The issue should be additionally researched as there are some leftovers in the JS Heap even when the workaround is used.
image

Environment

  • Kendo UI version: 2022.3.913
  • Browser: [all ]
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