Bug report

Reproduction of the problem

When the Editor is rendered in a long page with a scroller and the user paste a content replacing the entire content, the entire page scrolls, not only the Editor content.

1. Open the Dojo - https://dojo.telerik.com/wKDfkpEW
2. Copy long content for example from above the Editor
3. Mark the entire content in the Editor and paste the previously copied content

Current behavior

The entire page scrolls and in some cases the Editor is not visible.

screencast - https://go.screenpal.com/watch/cOQTlxnxqVk

Expected/desired behavior

Pasting in the Editor should not affect the page scroller.

Environment

• Kendo/Telerik version: 2026.3.811
• Browser: [all ]

Bug report

Following the commands in the following article

https://www.telerik.com/kendo-jquery-ui/documentation/intro/installation/ecmascript

and the steps for version after February 2026 - https://www.telerik.com/kendo-jquery-ui/documentation/intro/installation/ecmascript

when running npm run scripts: custom command or npm run build: custom an error is thrown:

Error: spawn npx ENOENT

at ChildProcess._handle.onexit (node:internal/child_process:287:19)

at onErrorNT (node:internal/child_process:525:16)

at process.processTicksAndRejections (node:internal/process/task_queues:90:21)

Emitted 'error' event on ChildProcess instance at:

at ChildProcess._handle.onexit (node:internal/child_process:293:12)

at onErrorNT (node:internal/child_process:525:16)

at process.processTicksAndRejections (node:internal/process/task_queues:90:21) {

Expected/desired behavior

A custom folder containing a custom script wth only the needed components should be created.

Environment

• Kendo/Telerik version: 2026.3.811
• Browser: [all ]

The Kendo Chart widget's documentation describes the setting seriesDefault.focusHighlight. However, in the typescript typings it is called focusHighLight (with a capital L).

The documentation matches the source code, but the typings do not.

Hi Team,

I would like to request a way to define the Legend Item's height.  This specific request is to allow the item to change size dynamically when the size of a container(such as a TileLayout, Window, etc..) shifts. 

Thank you! 

Configure open/close animations (effects and duration) for the Kendo jQuery Drawer, similar to ComboBox animation settings.

$("#combobox").kendoComboBox({
  animation: {
   close: {
     effects: "fadeOut zoom:out",
     duration: 300
   },
   open: {
     effects: "fadeIn zoom:in",
     duration: 300
   }
  }
});

Bug report

Reproduction of the problem

1. Open the Dojo and click on the action buttons in the attachment card - https://dojo.telerik.com/zUATLlOa/3

Current behavior

No event is triggered. Accordin to the APi the execute event should be triggered:

https://www.telerik.com/kendo-jquery-ui/documentation/api/ui/chat/events/executeaction

Expected/desired behavior

According to the documentation the executeAction event should be triggered when the user clicks an action button in an attachment card.

Environment

• Kendo/Telerik version: 2026.3.811
• Browser: [all ]

I'm using drawing.drawDOM to create a PDF. I have to make a table of contents (TOC) in the beginning of the PDF. 

It would be great if I had the ability to link to the correct section directly from the TOC. 

So <a href="#conclusion">Conclusion</a> and then later <a name="conclusion"></a> would make a link in the PDF so the reader could click on the Conclusion-link in the TOC and jump directly to the conclusion-section.

Hi Team,

I would like to request the Kendo UI TimePicker's dropdown to contain multiple entries of "12:00 AM" for a default-configured wrapper on a page whose browser session has crossed midnight.  This could be done in a few ways:

• treat +min == +max as "no restriction" regardless of the date part (this is what the wrapper emits by default), or
• derive maxSet from time-of-day only, or
• stop serializing Min/Max from the wrapper when they were not explicitly configured.

Thank you for your consideration.

Hi Team,

I would like to request the sv-FI and da-DK culture files to be updated - specifically the date format "d".  Using .NET, the culture file does not match CultureInfo(For example, sv-FI):

| Environment              | Culture | Short Date Format |
| ------------------------ | ------- | ----------------- |
| .NET Framework 4.8 / NLS | `sv-FI` | `dd-MM-yyyy`      |
|  Kendo UI 2026           | `sv-FI` | `dd-MM-yyyy`      |
| .NET 8/10 / ICU          | `sv-FI` | `yyyy-MM-dd`      |

basically based on (it will work till you change the font size settings in the browser (chrome://settings/appearance -> front size), it will lead to )

https://www.telerik.com/forums/image-only-on-command-buttons

and (without text, but without tooltip too)

http://dojo.telerik.com/@Iliana/aJeme

would be great to have such buttons out of the box

Hi team,

Please consider this dojo: https://dojo.telerik.com/zhQuuOhS

Here is the issue:

When validating field on the last line (field: units in stock), the validation tooltip is hidden (due to clipping), user needs to scroll down the grid.

Worse: if you then fill correctly the field and then re-empty the field, the validation tooltip is no more visible (no scrolling even possible in this case), please see screenshot attached.

Is there a way to make the validation tooltip immediately visible after validation takes place ? I mean without the need to scroll.

Best regards,

Laurent.

Bug report

Steps to reproduce

1. Open the Spreadsheet demo.
2. Import TestExcel.xlsx.
3. Compare the formula cell results with the same file opened in Microsoft Excel.

Current behavior

After import, some formula cells produce different results than Excel when the intermediate result is very close to zero.

Observed example from the attached file:

• In Excel:

  • E1 = 0
  • E2 = 0
  • F1 = 55110.305475240835

• In Spreadsheet after import:

  • E1 = 0.00000000004366
  • E2 = 0.000000000043660000000000000000
  • F1 = 0

Expected behavior

Spreadsheet should match Excel results for the imported workbook, including cases where formulas evaluate to values extremely close to zero.

Notes

The issue appears related to formula recalculation after import and handling of floating-point precision near zero.

In the attached file:

• The imported numeric inputs are:

  • A1 = 79590.518373344006
  • B1 = 0.16372664029103301
  • C1 = 4
  • D1 = 82665.458212861093

• The formula in E1 is:

  • A1*(1+B1)^(1/C1)-D1

Excel stores the result as 0, but Spreadsheet recalculates it to a very small positive number, which then changes the dependent IF result in F1.

Environment

• Spreadsheet core demo: local reproduction confirmed
• File used: TestExcel.xlsx

Workaround

  <script>
    const CANCELLATION_EPSILON = Number.EPSILON * 4;

    function collapseCancellationError(result, left, right) {
        const scale = Math.max(Math.abs(left), Math.abs(right));

        if (!scale || result === 0) {
            return result;
        }

        return Math.abs(result) <= CANCELLATION_EPSILON * scale ? 0 : result;
    }
    const { defineFunction } = KendoSpreadsheetCommon;
    defineFunction('binary+', function(a, b) {
        return collapseCancellationError(a + b, a, b);
    }).args([
        ['*a', ['or', 'number', ['null', 0]]],
        ['*b', ['or', 'number', ['null', 0]]]
    ]);

    defineFunction('binary-', function(a, b) {
        return collapseCancellationError(a - b, a, b);
    }).args([
        ['*a', ['or', 'number', ['null', 0]]],
        ['*b', ['or', 'number', ['null', 0]]]
    ]);
  </script>

TestExcel.xlsx

I would like to see a chat control with different layouts like skype, whats-app etc.

• Currently, when the legend has a lot of items or the labels are too long, it will create multiple lines and takes spaces. We would like to keep the legend in one line as fixed and add a scrollbar within the legend.
• This will make the chart more clean and the legend wont overtake the space of the chart and it will remain the same size no matter how many items it contains.

I realize this has been covered by this workaround in the past, but the need to write extra code for moving the column back to the original position makes this seem a bit "hacky" and most importantly, the user experience of being allowed to drag the column in the first place just to see it jump back seems wrong.

The good news is that the kendoGrid already has a mechanism for preventing the columnReorder event from getting fired in the first place! The bad news is that it only happens for columns that have either of these 2 classes ["k-group-cell, "k-hierarchy-cell"]

My request is to have a configuration option that enforces that same behavior for specific columns as:

1. Add a "reorderable" flag to be set as part of the column configuration (set it to false for those we want to keep in place)

2. This flag will set a class on those columns the same way it works for columns with "k-group-cell" or "k-hierarchy-cell" classes, so the event can be prevented.

There is one important caveat to consider with this approach: Only columns at the front and the back of the grid can be locked in place, so there needs to be validation to prevent having non-reorderable columns among reorderable ones.

The kendo grid's keyboard navigation does not work reliably when rendering a grid inside a dialog. I assume that this is caused by the dialog's focus trap.

To reproduce the issues, open this DOJO that just renders a grid in a dialog.

1. open the dialog
2. focus the "Add" button
3. press TAB until the focus is on the first cell
4. press ARROW DOWN (this focuses the checkbox in the cell below)
5. press TAB

-> the close button of the dialog is focused

Also note that after reloading the DOJO and doing this for the first time, step 3 directly focuses the checkbox while in consecutive runs, the cell is focused.

Bug report

Reproduction of the problem

1. Open this dojo - https://dojo.telerik.com/YupCowEr

1. Add a new item to the Grid

1. Click 'Save Changes'

1. Add another item to the Grid

1. Click 'Cancel Changes'

Current behavior

The last saved item is moved to the end of the Grid

TicketID:

1716706

Environment

• Kendo/Telerik version: 2026.2.520

Bug report

Reproduction of the problem

When the diagram is zoomed the click event is not fired when clicking on shapes.

1. Open this dojo - https://dojo.telerik.com/iALWmVGY
2. Zoom diagram out
3. Click on a shape

Current behavior

Click event is not fired.

Expected/desired behavior

Click event should be fired when clicking on a shape in zoomed out diagram

TicketID:

1715835

Bug report

Reproduction of the problem

Run this dojo - https://dojo.telerik.com/MkKhDjxX

The results are different when using the same values in Excel.

Current behavior

Result comparison for cells with numeric values

Result comparison for cells with text values

TicketID:

1715542

Environment

• Kendo/Telerik version: 2026.2.520