Test Environment:

Describe the bug
When there is an event that lasts multiple days, but is not an all-day event the title and the up arrow overlap, thus it makes the reading of the title harder.

To reproduce
Open the Dojo - https://dojo.telerik.com/@NeliK/IruYeGEc

Expected behavior
The arrow and the title should be rendered with some margin

Screenshots

Workaround

 .k-event-template{
      margin-top: 8px !important;
    }

Affected package (please remove the unneeded items)

• theme-default
• theme-bootstrap
• theme-material
• theme-tasks

Affected suites (please remove the unneeded items)

• Kendo UI for jQuery
• Kendo UI for Angular
• Kendo UI for React
• Kendo UI for Vue

Affected browsers (please remove the unneeded items)

• All

Bug report

Reproduction of the problem

1. Run this dojo
2. Try to select a file by clicking on its icon

Current behavior

The select event is not fired.

If clicked next to the icon the select works as expected.

Expected/desired behavior

The select event should be fired consistently

TicketID:

1719355

Environment

• Kendo/Telerik version: 2026.3.811

Reproduction of the problem

1. Run this sample
2. Select first row
3. Delete the row
4. Select range A1:C3
5. Apply borders
6. Select row 3
7. Delete the row

Current behavior

Top border of cell B1 disappears

Expected/desired behavior

Borders are persisted

TicketID:

1708030

Environment

* **Kendo UI version:** 2025.4.1217

Bug report

Data validation should not require DATEVALUE("") in Start and End inputs when `Date` is selected

Reproduction of the problem

https://demos.telerik.com/kendo-ui/spreadsheet/index

1. Select an empty cell
2. Click Data validation
3. Set Start: DATEVALUE("1/1/2024") and End: DATEVALUE("2/2/2025")
4. Automatic Hint message looks like: between DATEVALUE("1/1/2024") and End: DATEVALUE("2/2/2025")

Expected
Generated hint message shall not contain DATEVALUE("")


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

Hi support

I think I've found a bug in kendo ui 2026.3.811 DropDownButton. Whenever you call setOptions on an existing button (created with with showArrowButton = true), another arrow button is added. You can easily reproduce the issue with your jquery DropDownButton Appearance demo. First set 'Show Arrow Button' to true. Then change any other option.

Kind regards

Iggy

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 ]

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.