Bug report

Reproduction of the problem

Go to this Progress Telerik REPL for ASP.NET Core.

Current behavior

(optional)
Provide additional information if the steps for reproducing the faulty behavior are not sufficient to describe the issue.

Expected/desired behavior

Like the Kendo UI for jQuery version, null should be a valid selection.

TicketID:

1718054

Environment

Kendo UI version: 2026.3.811
jQuery version: 4.0.0
Browser: all

Bug report

The Telerik.UI.for.AspNet.Mvc5 2026.3.811 package lists Telerik.SvgIcons and Telerik.FontIcons version 4.9.2 as dependencies in its .nuspec file.

However, compiling a project that references Telerik.UI.for.AspNet.Mvc5 results in package version conflicts for both packages.

The rquired version of the Telerik.SvgIcons and Telerik.FontIcons is 4.11.0

Expected/desired behavior

There should be no version mismtach for the Kendo.MVC.dll dependencies.

Environment

• Kendo/Telerik version: 2026.3.811

Bug report

Reproduction of the problem

Create a Grid using the Telerik UI for ASP.NET MVC wrappers and add .Size(ComponentSize.Medium) to the configuration.

Current behavior

When the Grid is created using Telerik UI for ASP.NET MVC wrappers and  .Size(ComponentSize.Medium) is applied the Grid is missing the k-grid-md class.

When using the same configuration but with .Size(ComponentSize.Small) k-grid-sm class is present.

The classk-grid-md is present when using jQuery and Telerik ASP.NET Core.

Expected/desired behavior

The behavior should be consistent and the k-grid-md class should be applied also when using Telerik UI for ASP.NET MVC wrappers

Environment

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

Bug report

Reproduction of the problem

Dojo example: https://dojo.telerik.com/oDOcanIk

1. Drag tile A and drop it after tile B

Current behavior

The checked radio button of the RadioGroup appears unchecked.

Expected/desired behavior

The RadioGroup check state remains the same.

Environment

• Kendo UI version: 2022.2.802
• jQuery version: x.y
• Browser: [all]

First of all, we are using the 'Telerik UI for ASP.NET Core' product. We would like to ask you about the PivotGrid component, since we are having a strange behavior with the application of filters on the dimensions once the PivotGrid shows the data.

The use case is as follows:

1. We configure the PivotGrid applying two dimensions, one in a column (‘family_name’) and the other in rows (‘bc_name’) and select a measure (‘Amount’), and the PivotGrid is generated as expected. (see Case1.png)
2. We apply one filter to the columns, for example ‘family_name’ contains ‘OJOS’, and the PivotGrid is refreshed showing only the data filtered as expected. (see Case2.png and Case3.png)
3. We apply another filter to the rows, for example ‘bc_name’ contains ‘Barrios’, and the PivotGrid is refreshed showing only the data filtered by that filter, but no for the combination of the filter of ‘family_name’ applied before. (see Case4.png and Case5.png)

As you can see, the behaviour is strange, because we we can’t see the data with the application of both filters in combination.

I also included the code where we build the PivotGrid, if that can help to see the problem. (see Code.txt)

Hope that you can help us, because that is a real inconvenient for us.

 Thanks in advance.

Bug report

If there is a Spreadsheet on a given page and we scroll the page down using the mouse wheel, once the scrolling stops over the Spreadsheet and we try to continue it, we cannot do it. If the Spreadsheet has defined rows that are not currently visible when the mouse wheel is moved, then Spreadsheet is being scrolled, not the current page.

If the Spreadsheet has a lower number of pre-defined rows that are all displayed on the component's initialization the scrolling is again not applying to the page. Instead, moving the mouse wheel doesn't do anything until the mouse cursor is moved outside the Spreadsheet.

Reproduction of the problem

1. Open this Dojo example and run it
2. Move the mouse cursor in the middle of the pane displaying the compiled code.
3. Use the mouse wheel to scroll down the page and stop the scrolling once the cursor is in the zone of the Spreadsheet
4. Scroll down again

Current behavior

Because the cursor is inside the Spreadsheet the page cannot be scrolled. If the rows configuration is commented, when the scrolling is started again, the Spreadsheet data will be scrolled.

Expected/desired behavior

If all the data in the Spreadsheet is displayed, moving the mouse wheel over the component should result in page scrolling. If there is data in the Spreadsheet, there should be some way to prevent the scrolling inside the component.

Environment

• Kendo UI version: 2020.1.114
• jQuery version: x.y
• Browser: [all]

Bug report

When a table is created through the table wizard and cellspacing is set to 0, this value is ignored and the table is created with no cellspacing value. 0 is a valid value and it affects the appearance of the table, so it should not be equivalent to not setting cellspacing.

Reproduction of the problem

Reproducible in the demos.

1. Use the table wizard.
2. Set 0 as cellspacing value.
3. Create the table.
4. Inspect the table in the browser's dev tools.

Current behavior

The table has no cellspacing attribute.

Expected/desired behavior

The table has cellspacing set to 0.

Environment

• Kendo UI version: 2020.2.617
• jQuery version: x.y
• Browser: [all ]

View several folders in treeview of the filemanager:  folder1, folder2, folder3

select folder1

now Click and drag folder2 to folder3.

the folder1 moves to folder3.  

this is not desired.

can be reproduced in the demo

https://demos.telerik.com/aspnet-mvc/filemanager

Bug report

When using MVVM generated DropDownList input decorated with required attribute the validation message is not displayed upon validation.

Reproduction of the problem

1. Run this dojo
2. Click on a slot to create an event
3. Select an item from the second DropDownList
4. Click Save

Current behavior

Upon clicking Save the validation fails, as the first input has a required attribute, but a validation message is not displayed.

Expected/desired behavior

On failed validation, a validation message should be displayed.

Environment

• Kendo UI version: 2020.1.406
• Browser: [all]

Hello,

I have problem with menu control. Sometimes its items are duplicated. To reproduce it do the following: 

- create a menu control;

- bind it to remote data source (to reproduce issue easier set some delay for server side method);

- hover on menu item (datasource request will start), fast leave menu item (don't wait until it open) and hover again (one more datasource request will start), leave it again (optional);

- wait some time until second request completed;

- open menu item.

As a result you will see duplicated menu items. This issue can be reproduced on your demo page https://demos.telerik.com/kendo-ui/menu/remote-data-binding.

Could you please suggest me some workaround for this?

BR,

Artsem

Bug report

Reproduction of the problem

Dojo example.

1. Open the dev tools console.
2. Click on the button above the Editor.
3. The Editor value is logged in the console.
   Note this part in the content:

if (value == 1) { text += "<h2>Apple</h2>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.<br><br>>> APPLE Deutschland</a>";

4. Click on the "viewHtml" tool. In the popup do not make any changes to the content, just click on "Update".
5. Click on the button above the Editor.
   The mentioned part of the script tag now looks like this:

if (value == 1) { text += "<h2>Apple</h2>
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.<br><br>>> APPLE Deutschland</a>";

A js exception is thrown after this content is loaded in the div below the Editor, because of the line break after:

if (value == 1) { text += "<h2>Apple</h2>

Current behavior

The viewHtml modifies the content of script tags, which causes js logic to become invalid.

Expected/desired behavior

The viewHtml tool should not make changes to the content of script tags.

Environment

• Kendo UI version: 2020.3.1021
• jQuery version: x.y
• Browser: [all]

Bug report

The tables within the Editor are not exported correctly (do not fit in the exported pdf document) when resized before exporting.

Reproduction of the problem

1. Open the following demo.
   https://demos.telerik.com/kendo-ui/editor/pdf-export
2. Resize the column of the table.
3. Export to PDF.

Current behavior

The table does not fit in the exported document.

Expected/desired behavior

The table should fit in the document.

Environment

• Kendo UI version: 2022.2.510
• Browser: [all]

Creating a Telerik project for the "Standard" option is broken (VB.NET and C#):

1. The project fails building due to this error:

2. The rendered hamburger menu does not appear properly:

We set up a grid that auto-filters a name field to "does not contain" and the value it excludes is "[DEACTIVATED]".  This column is also filtering out records that have a null in them if this filter is set.  I had to change the datasource to return an empty string instead.

A recent update has revealed some strange behaviour in some (not all) grids. In the attached screenshot, the javascript for the two buttons is on display inside the toolbar. If I move them out of the toolbar, the script no longer displays.

As a workaround, I have added this to CSS:

script {
	display: none !important;
}

Bug Report

When endless scrolling is implemented, manual DataSource operations using the DataSource APIs(query, page, sort, etc.) do not work as expected.  The endless scrolling settings are causing paging issues.  

Reproduction of the problem

1. Visit this Kendo UI Dojo.
2. Scroll to 40.
3. Click the Reset Filter button.

Current Behavior

The first page is only accessible, and when scrolling down the reads continue to occur.

Expected/desired behavior

The endless scrolling settings should not interfere with manual dataSource operations.

Workarounds

1. Solution when read is called, the Kendo UI Grid will reset to its original state(dojo). 
   

       kendo.ui.Pager.fn._refreshClick = function (e) {
           e.preventDefault();
           var grid = $("#grid").getKendoGrid();
           grid.dataSource.options.endless = null;
         	grid._endlessPageSize = 20;
         	grid.dataSource.pageSize(20);
       }

2. Solution which overrides the data(dojo).
   

       kendo.ui.Pager.fn._refreshClick = function (e) {
           e.preventDefault();
           var grid = $("#grid").getKendoGrid();
           window.restoreScroll = true;
           window.scolledValue = grid.content[0].scrollTop;
           grid.dataSource._data.empty();
           grid.dataSource._pristineData = [];
           grid.dataSource.read();
       }

Environment

• Kendo UI version: 2020.1.114

When using the Telerik upgrade wizard I get a error while upgrading my web app: