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 ]

Bug report

Reproduction of the problem

1. Open the https://dojo.telerik.com/SSFszYRK or https://dojo.telerik.com/yYFBekrt
2. Copy some text
3. Select part of the text in the Editor and try to paste using Ctrl + V

Current behavior

Currently, the highlighted (selected) text dissapers.

Expected/desired behavior

The selected 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;
        }
      }

Environment

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

The DatePicker widget does not focus the input element when the calendar icon is clicked. Because of that, validation errors are persisted even when the value of the input has been filled out correctly. The input needs to be manually focused and then unfocused to get rid of the validation message.

This behavior can be observed on the following demo page:

https://demos.telerik.com/kendo-ui/validator/custom-validation 

The demo should be viewed in mobile mode.

Bug report

If the ColorPicker tools in the Editor are configured to render a gradient, you cannot type in the HEX/RGB inputs.

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/AWEmUSOS/7
2. Open one of the Color tools.
3. Try to type in the inputs.

Current behavior

The inputs are not selectable and you cannot type in them.

Expected/desired behavior

The inputs should be selectable so that you can type in them.

Environment

• Kendo UI version: 2023.2.829
• Browser: [all]

Bug report

Spreadsheet validation on datatype=list, values in the dropdown are parsed to numbers. Numeric strings are automatically formatted by removing the heading zero.

Reproduction of the problem

Dojo: https://dojo.telerik.com/eOOvKJxL

                  validation: {
                      dataType: "list",
                      showButton: true,
                      comparerType: "list",
                      from: "{ \"001\", \"002\", \"Baz item 3\" }",
                      allowNulls: true,
                      type: "reject"
                    } 

The bug is a regression, formatting is different with a 2017 version: https://dojo.telerik.com/sCvgBzBa/5

Environment
**Kendo UI version: 2025.1.211
**Browser: [all]

Bug report

The complete event is triggered after each file upload if chunkSize is set.

Reproduction of the problem

1. Open this Dojo example.
2. Select at least two files to be uploaded.

Current behavior

The complete event is triggered for each file after the uploading is done.

Expected/desired behavior

The complete event should trigger only once when the upload process for all files is completed.

Workaround in this Dojo example

Environment

• Kendo UI version: 2020.1.114
• Browser: [all]

Bug report

When a DropDownTree is placed in a Kendo Dialog, an alert about 'Blocked area-hidden...' element appears in the console once the DropDownTree is opened.

Reproduction of the problem

1. Run the Dojo - https://dojo.telerik.com/RyeUSdVM
2. Open the Dialog and then open the DropDownTree.
3. Select an item in the DropDownTree.

Current behavior

A warning Blocked aria-hidden on an element because its descendant retained focus. The focus must not be hidden from assistive technology users. Avoid using aria-hidden on a focused element or its ancestor.... appear

Expected/desired behavior

There should be no warnring about hidden elements in the console.

Environment

• **Kendo UI version:**2025.3.1002
• Browser: [all ]

Bug report

When the destroy() method is used for kendoPivotConfiguratorV2 and kendoPivotConfiguratorButton an error is thrown.

Reproduction of the problem

1. Open the dojo example - https://dojo.telerik.com/pkBibvww
2. Open the browser console and observe the result

Current behavior

An error: TypeError: Cannot read properties of null (reading 'removeData') is thrown.

Expected/desired behavior

There should be no error, and the configurator and the kendoPivotConfiguratorButton should be successfully destroyed.

Environment

• Kendo UI version: 2025.2.702
• Browser: [all ]

Bug report

Grid rows could not be properly selected on iPad

Reproduction of the problem

1. Open the dojo on iPad - https://dojo.telerik.com/gWsPhtrv
2. Try to select a row.

Current behavior

The rows could not be selected.

Expected/desired behavior

It should be possible to select a row in the Grid when it is loaded on iPad.

Used device for testing: iPad Pro iOS18.6

Environment

• Kendo UI version: 2025.3.812
• Browser: [all ]

Bug Report

When a navigatable Kendo UI Grid is configured with a stacked dataLayoutMode and is in an inline edit mode, using the arrow keys fails to operate as expected for the editor.

Reproducible

1. Go to this Progress Kendo UI Dojo.
2. Edit any line and get into text field or numeric field.
3. Use the arrow keys to edit the component, such as up/down for numeric change or left/right to move cursor in textbox

Current Behavior

The left and right arrow keys do not appear to function. The up and down arrows move to the next rows.

Environment

• Kendo UI version: 2026.1.415
• jQuery version: All Supported Versions
• Browser: all

Bug report

In RTL Scheduler dragging of events does not horizontally scroll is not possible

Reproduction of the problem
1. Open this Dojo example - https://dojo.telerik.com/HrVYvFSY

2. Drag the Meetings with Alex event to the left. Scrolling  to non visible slots not possible.

3. Scroll to the left to find an event in the middle of the day, start to drag it, the scheduler scrolls horizontally to the beginning of the day

Expected/desired behavior
Scrolling to the left shall be possible as it is in the non LTR Scheduler

Environment
Kendo UI version: all
Browser: [all]

Using a datasource on a sheet

Selecting entire sheet and clicking the filter in the data toolbar tab.

The buttons for the columns do not respect the size of rowHeight or headerHeight

Set rowHeight to 20 and i get this 

Bug report

Long Gantt event is not visible since 2022.1.119

Reproduction of the problem

1. Open the Gantt Demo in Firefox.
2. Switch the view to Month.
3. Pick an event row in the chart (e.g. 'Market Research'), and set the End date to 2024-12-31.
4. The event is no longer visible in the right-hand-side of the gantt.

Expected/desired behavior

Gantt event shall be visible

Environment
Kendo UI version: 2022.1.119 or newer
Browser: [all]

Bug report

When we have a scenario with the Upload component configured with a chunk upload configuration, we cannot upload a file that contains an apostrophe in its name.

• The reported issue is not reproducing when the Upload is used inside a form or when it is configured to work in Asynchronous mode.
• The reported issue is also no reproducing when we try to upload a file that contains the ( ` ) symbol. It is replicated only when the apostrophe is in the filename

Reproduction of the problem

1. Open this demo
2. Upload the Dr's notes.pdf file from the below archive
   TestFiles.zip

Current behavior

The selected for upload file is not being uploaded.

** If the above scenario is tested in an MVC project, the error returned from the server is "A potentially dangerous Request.Form value was detected from the client". Below you will find a test project:
ChunkUpload.zip

Expected/desired behavior

The files selected for upload should not have any issues with their uploading, no matter if there is an apostrophe in their name or not.

Environment

• Kendo UI version: 2020.3.915
• jQuery version: x.y
• Browser: [all]

there is no binding for noData

e.g.

        noData?: boolean | undefined;

    interface ChartOptions {
        name?: string | undefined;
        autoBind?: boolean | undefined;
        axisDefaults?: ChartAxisDefaults | undefined;
        categoryAxis?: ChartCategoryAxisItem | ChartCategoryAxisItem[] | undefined;
        chartArea?: ChartChartArea | undefined;
        dataSource?: any|any|kendo.data.DataSource | undefined;
        legend?: ChartLegend | undefined;
        panes?: ChartPane[] | undefined;
        pannable?: boolean | ChartPannable | undefined;
        pdf?: ChartPdf | undefined;
        persistSeriesVisibility?: boolean | undefined;
        plotArea?: ChartPlotArea | undefined;
        renderAs?: string | undefined;
        series?: ChartSeriesItem[] | undefined;
        seriesColors?: any;
        seriesDefaults?: ChartSeriesDefaults | undefined;
        theme?: string | undefined;
        subtitle?: string | ChartSubtitle | undefined;
        title?: string | ChartTitle | undefined;
        tooltip?: ChartTooltip | undefined;
        transitions?: boolean | undefined;
        valueAxis?: ChartValueAxisItem | ChartValueAxisItem[] | undefined;
        xAxis?: ChartXAxisItem | ChartXAxisItem[] | undefined;
        yAxis?: ChartYAxisItem | ChartYAxisItem[] | undefined;
        zoomable?: boolean | ChartZoomable | undefined;
        axisLabelClick?(e: ChartAxisLabelClickEvent): void;
        dataBound?(e: ChartDataBoundEvent): void;
        drag?(e: ChartDragEvent): void;
        dragEnd?(e: ChartDragEndEvent): void;
        dragStart?(e: ChartDragStartEvent): void;
        legendItemClick?(e: ChartLegendItemClickEvent): void;
        legendItemHover?(e: ChartLegendItemHoverEvent): void;
        legendItemLeave?(e: ChartLegendItemLeaveEvent): void;
        noteClick?(e: ChartNoteClickEvent): void;
        noteHover?(e: ChartNoteHoverEvent): void;
        noteLeave?(e: ChartNoteLeaveEvent): void;
        paneRender?(e: ChartPaneRenderEvent): void;
        plotAreaClick?(e: ChartPlotAreaClickEvent): void;
        plotAreaHover?(e: ChartPlotAreaHoverEvent): void;
        plotAreaLeave?(e: ChartPlotAreaLeaveEvent): void;
        render?(e: ChartRenderEvent): void;
        select?(e: ChartSelectEvent): void;
        selectEnd?(e: ChartSelectEndEvent): void;
        selectStart?(e: ChartSelectStartEvent): void;
        seriesClick?(e: ChartSeriesClickEvent): void;
        seriesHover?(e: ChartSeriesHoverEvent): void;
        seriesOver?(e: ChartSeriesOverEvent): void;
        seriesLeave?(e: ChartSeriesLeaveEvent): void;
        zoom?(e: ChartZoomEvent): void;
        zoomEnd?(e: ChartZoomEndEvent): void;
        zoomStart?(e: ChartZoomStartEvent): void;
    }

Bug report

When using the Signature in a Wizard the the drawing line is being offset.

Reproduction of the problem

1. Run this dojo
2. Try to draw a signature

Current behavior

The line is offset and the drawing looks distorted.

Expected/desired behavior

Drawing line should be applied correctly.

The issue might be related to #7108

Environment

• Kendo UI version: 2022.3.1109
• Browser: [all]

Hi,

if you load the signature component when the mobile device is in vertical position and then rotate the device in the horizontal position the component doesn't detect changes and the signature capture doesn't work as it should (there is a span between the mouse/pen and the signature line).  The same also happens in browser if you change the browser window size so much that the signature component window shrink. I noticed a strange behaviour in signature popup on my project, but you may also try it on your demo component: https://demos.telerik.com/kendo-ui/signature/index .

Thanks

Bug report

Scrollable menu opening wrong menu on mobile

Reproduction of the problem

This is reproducible in Chrome developer tools - using iPhone 14 Pro Max

Dojo: https://runner.telerik.io/fullscreen/jtDsGBpV

1. Scroll a little to the right to have Ladies partially hidden

2. Click on Ladies

3. Notice that the ladies is focused and scrolled to be fully visible but the opened submenu is Mens

Environment

jQuery: 3.4.1

Kendo UI version: 2025.1.227
Browser: [all]

Bug report

In the Speadsheet, the items of the DropDownButton for the sheet tabs are hardcoded and cannot be translated

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/EtdKrzwo/2
2. Click the DropDownButton for the Food Order sheet

Current Behavior

The DropDownButton's items are not translated

Expected/desired behavior

The DropDownButton's items are not translated

Environment

• Kendo UI version: 2025.3.1002
• Browser: all

Current behavior

The following demo should export the Charts to the generated pdf file, but it does not;
https://demos.telerik.com/kendo-ui/pdf-export/index

Expected/desired behavior

It should export all elements within the container. This works properly in older versions:
https://dojo.telerik.com/CfWcHUQK