Using the latest 2026.3.811 version produces the following errors:

• kendo.all.d.ts(12072,26): error TS2552: Build:Cannot find name 'SchedulerKendoKeydownEvent'. Did you mean 'SliderKendoKeydownEvent'?
• kendo.all.d.ts(14372,9): error TS2416: Build:Property 'options' in type 'ToggleButton' is not assignable to the same property in base type 'Button'.
• kendo.all.d.ts(14384,15): error TS2430: Build:Interface 'ToggleButtonOptions' incorrectly extends interface 'ButtonOptions'.

When a Date is already present in the DateTimePicker and the date parts are focused with a mouse click the digits for the year part are cut off.

Reproducable in this Dojo.

Screen recording of the issue.

In the latest version (2023.2.718), the Column Menu in the Grid faild to open if you set the Groupable option to false.

To reproduce the issue simply change the line below in the Grid Overview Demo

.Groupable(g=>g.ShowFooter(false))

to the following:

.Groupable(false)

https://netcorerepl.telerik.com/cxkhGOvU52pBO4NK33

The error you get when clicking on the Column Menu is:

Uncaught TypeError: Cannot read properties of undefined (reading '_canDrag')
    at init._updateGroupColumns (kendo.all.js:321370:19)
    at init._open (kendo.all.js:321370:19)
    at init.trigger (kendo.all.js:321370:19)
    at init._trigger (kendo.all.js:321370:19)
    at init.open (kendo.all.js:321370:19)
    at init.toggle (kendo.all.js:321370:19)
    at init._click (kendo.all.js:321370:19)
    at HTMLAnchorElement.dispatch (jquery.min.js:3:12445)
    at r.handle (jquery.min.js:3:9174)

### Bug report


### Reproduction of the problem
On the mobile version on Android 10, the Grid does not enter incell editing.

Dojo to reproduce: https://dojo.telerik.com/oDUBuKAt


### Environment

* **Kendo UI version:** 2020.1.219
* **Browser:** Android 10 Web Browser 

I have a screen that I'm manually calling the print functionality of the kendo-pdfviewer from a button click.   It is working, but the problem is that the resulting print dialog window is really small.   Even if I open the print dialog, resize the dialog, and then try to print again it gets reset to the original small size.  This is preventing our users from previewing what the resulting page will print like.   



This is the code for my pdf viewer

<div class="row">
    <div class="col">

        <div id="example">

            <kendo-pdfviewer name="pdfviewer" height="300">
                <pdfjs-processing file="@(Url.Page("/Badges/Details", "VisitorBadge", new { BadgeId = @Model.Id }))" />
                <toolbar enabled="false">
                    <pdfviewer-toolbar-items>
                        <pdfviewer-toolbar-item command="PrintCommand" type="button" name="print" icon="print"></pdfviewer-toolbar-item>
                    </pdfviewer-toolbar-items>
                </toolbar>
            </kendo-pdfviewer>
        </div>

        <style>
            html body #pdfviewer {
                width: 100% !important;
            }
        </style>
    </div>
</div>

    badgereport.onWindowOpen = function () {
        $pdfviewer = $("#pdfviewer").data("kendoPDFViewer");
        $printBadgePdf = $("#printBadgePdf");
        $closeBadgePdf = $("#closeBadgePdf");
        $badgeWindow = $("#badgeWindow").data("kendoWindow");

        $printBadgePdf.on("click", function (e) {
            e.preventDefault();
            $pdfviewer.execute({ command: "PrintCommand" });

        });
        $closeBadgePdf.on("click", function (e) {
            e.preventDefault();
            $badgeWindow.close();
        });

    };

When certain options of the editable Window are set through configuration, they are not being serialized correctly:

MinWidth
MinHeight
Events (Open, Close, etc.)

I am working on a grid that has 3 requirements that seem to cause the bug:

• A FK column must have its lookup values loaded remotely
• The grid has sticky columns
• The grid is loaded inside a tab strip control

The combination of these 3 factors causes the grid not to load and results in a devtools console error. It's worth noting that removing any of the 3 bullet points above (e.g. NOT using sticky columns, NOT loading grid in tab control, or NOT have a remote FK column) allows the grid to load properly.

The error thrown in the DevTools console indicates that the grid's "tbody" property is not created at the time it is trying to call _setStickyStyles.

Before error is thrown (mouse is hovering over "tbody" property):

After error is thrown (look at console output):

I have upload a zip file containing a sample project that demonstrates the issue. When you launch the sample application, there are 2 links at the top of the page, "No Tabs" and "Tabs". The issue is reproducible on the "Tabs" page. Both pages use the same grid partial, but the "Tabs" page loads the partial through the tabstrip with a controller action. The "Tabs" page includes the 3 bullet points I indicated above that cause the problem.

The workaround I am using for now in my application is to NOT set the columns as sticky in my partial view. Instead, I set the sticky columns using the grid's API method "stickColumn" (https://www.telerik.com/kendo-jquery-ui/documentation/api/javascript/ui/grid/methods/stickcolumn) during the grid's dataBinding event (to ensure sticky columns are set AFTER grid initialization). This allows the grid to load and sets the sticky columns appropriately.

Thank you!

Bug report

Grid throws an error when there are double quotes in foreign key column values:

new TestSelectItem { Text = "AAA\"BBB\"CCC", Value = "2" },

Reproduction of the problem

1. Open and run the attached sample projectBadQuotes_sample.zip
2. Click ‘Add’ button

Current behavior

The following error is thrown in the console:

SyntaxError: Failed to execute 'appendChild' on 'Node': Unexpected identifier 'My' (at VM20:1:144)

Expected/desired behavior

There should be no error and the value should appear escaped:

Workaround:

Text = item.Text?
    .Replace("\\", "\\\\")
    .Replace("\"", "\\\"")

TicketID: 1717693

The issue is a regression starting with Ui for ASP.NET Core version 2024.4.1112

Environment

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

Bug report

Button 'New Event' don't translate after change language:

Environment

• Kendo/Telerik version: 2026.3.811
• jQuery version: x.y
• Browser: [all]

Bug report

Reproduction of the problem

1. Run this dojo - https://dojo.telerik.com/rGSjmlhv/2
2. Filter Discontinued - true - > shows all items with value true (correct)
3. Filter Discontinued - false → shows all items with value false (correct)
4. Filter Discontinued - true - > shows empty (incorrect)

TicketID:

1718475

Environment

• Kendo/Telerik version: 2026.3.811
• jQuery version: 3.7.0

### Bug report

When a non-sortable Grid column header is hovered, the mouse cursor indicates that it is sortable.

### Reproduction of the problem

1. Create a sortable Grid with a non-sortable column.

2. Hover the column header.

3. Mouse cursor is a "pointer".

Here is a dojo sample for reproduction: Untitled | Kendo UI Dojo (telerik.com)

### Expected/desired behavior

Only the headers of the sortable Grid columns should be indicated with a "pointer" when hovered.

### Environment

Kendo UI version: 2022.6.621
jQuery version: 1.12.4
Browser: [all] 

### Bug report

When the Grid is initialized in a hidden container (for example, in a non-selected tab of a TabStrip) and its initial data binding is disabled (autoBind: false), the pager information is not visible when the data is loaded afterward.

### Reproduction of the problem

1. Initialize a Grid into a non-selected tab of a TabStrip and set its autoBind option to "false".

2. Select the tab and check how the empty Grid is rendered.

3. Call the read() method of the Grid's DataSource in the browser console to request the data.

4. The data is loaded, but the pager information remains hidden.

A Dojo sample for reproduction: https://dojo.telerik.com/njVgBvza

### Expected/desired behavior

The pager information must be available when the data is loaded into the Grid.

### Environment

* **Kendo UI version: 2024.4.1112
* **jQuery version: 3.7.1
* **Browser: [all]

### Bug report

When removing a data item through the DataSource remove() method, and then trying to add a new record in the Grid, the editable row does not close when clicking the "Save" command. The Grid is set up for InLine editing. 

### Reproduction of the problem

1) Create an InLine editable Grid that binds to local data.

2) Add a custom column command that removes the respective data item by using the remove() method of the DataSource.

3) Delete a specified Grid record through the custom command.

4) Add a new record and click the built-in "Save" command.

5) The row remains in edit mode.

A Dojo sample for reproduction: https://dojo.telerik.com/IQIDuGOt

The last working version is 2024.1.130

### Expected/desired behavior

The editable row must close when clicking "Save" or "Cancel".

### Workaround

Use the Grid removeRow() method rather than the DataSource remove() method.

### Environment

* **Kendo UI version: 2024.1.319
* **jQuery version: 3.7.0
* **Browser: [all]

Bug report

Reproduction of the problem

1. Open the Dojo - https://dojo.telerik.com/FcHfotEy
2. Hover over more than one image

Current behavior

Only the first image has the correct width and height

Expected/desired behavior

The Tooltip should respect the width and height size configurations.

Workaround:

contentLoad: function (e) {
              $(".k-tooltip.k-popup").width(500).height(500);
            },

https://dojo.telerik.com/lvXLxxYD 

TicketID: 1717434

The issue is a regression starting with 2026.2.520 version

Environment

• Kendo/Telerik version: 2026.2.520
• Browser: [all ]

Bug report

Reproduction of the problem

1. Open the Dojo - https://dojo.telerik.com/zjwPGXDx/3
2. Click → Open Window 1 → Open Window 2 → Open Payroll Window
3. In the Add Payroll change a value and click Save

Current behavior

The Dialog is displayed below Kendo Widnow although the .open() method is used which should invoke .toFront()

Expected/desired behavior

As the Dialog is the last opened Dialog/Window it should be displayed over the Window

TicketID: 1717764

Workaround:

setTimeout(function(){              
              kdAddPayrollError.open();
            }, 500)

Dojo - https://dojo.telerik.com/cxXRIZgS

The issue is a regression starting with: 2025.4.1217

Environment

• Kendo/Telerik version:
• jQuery version: x.y
• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]

Bug report

The DateTimePicker's popup calendar view is cut in the Default, Classic, and Fluent themes.

Reproduction of the problem

1. Run the following dojo
2. Set the sizing option of the widget to large.
3. Open to DatePicker popup.

Current behavior

The Date and Time views in the DateTimePicker popup are trimmed.

Expected/desired behavior

The Date and Time views in the DateTimePicker popup should not be trimmed.

Environment

• Kendo UI version: 2023.1.117
• Browser: [all]

Bug report

When a user creates a filter with a date, it starts as an empty Datepicker, but the value is appearing as an empty string. Thus, if the user clicks apply, an error appears in the console. If you place a value in the DatePicker and clear it, the value will be Null.

Reproduction of the problem

1. Go to this Progress Telerik ASP.NET Core REPL.
2. Add filter for a Date but keep the datepicker empty.
3. Select apply.
4. Now, add a date and clear the value.

Current behavior

The filter menu sends isnull filter queries in the following format:

While the Filter component sends it as follows:

As a result the ToDataSourceResult method fails.

Expected/desired behavior

If the DatePicker is empty, the filter should properly perform the 'isnull' query upon clicking apply.

Environment

• Kendo UI version: 2023.2.606
• jQuery version: All Supported Versions
• Browser: all

### Bug report

On mobile devices, when the TaskBoard columns are filled with cards, the users have trouble scrolling horizontally through the columns. When they attempt to scroll the screen, they accidentally drag cards instead of scrolling the columns. This makes navigation in the TaskBoard quite difficult, particularly for projects with a large number of cards.

### Reproduction of the problem

1. Create a TaskBoard with at least two columns.

2. Fill the columns with cards.

3. Open the browser DevTools and switch to mobile view. Tap a card to scroll the columns horizontally or tap at the bottom of the TaskBoard to activate the horizontal scrollbar.

4. The last card is accidentally dragged.

A Dojo sample for reproduction: https://dojo.telerik.com/izASODan

### Expected/desired behavior

When the user makes a hold/long press/long tap, show the "indicator for drag and drop" and then he/she continues with the gesture by moving the card to the desired column and lift the finger. This way, the accidental dragging will be prevented. For more information, refer to the GitHub issue.

Note: The cards in the TileLayout can be dragged only through the card's title element. The TaskBoard cards can be dragged through the card's body, as well.

### Environment

* **Kendo UI version: 2024.3.806
* **jQuery version: 3.7.0
* **Browser: [all]