Bug report
Reproduction of the problem
- Open the link in Firefox - https://demos.telerik.com/kendo-ui/editor/inline-editing .
- Select and delete all the text in one of the inline editors.
- Type any two (or more) characters to reproduce the issue.
Current behavior
If the user begins typing a word into the editor, the first character is automatically wrapped in a <p> tag.
Expected/desired behavior
The behavior between the browsers should be consistent. There should be no additional <p> tag.
Workaround: https://dojo.telerik.com/usTyJAmt/3
Environment
- Kendo/Telerik version: 2026.2.520
- Browser: [all ]
Bug report
Reproduction of the problem
- Open the Dojo - https://dojo.telerik.com/guOqNNgh
- Edit a row and save the new value
Current behavior
An error: kendo.grid.js:16278 Uncaught TypeError: Cannot read properties of undefined (reading 'field')
Expected/desired behavior
No error should be thrown. It should be possible to use detailedTemplate along with the stackedLayout
TicketID: 1715859
Environment
- Kendo/Telerik version: 2026.2.520
- Browser: [all ]
The NumericTextBox silently rejects valid decimal values at or below 1e-7 (e.g., 0.0000007) when pasted or programmatically set. Telerik's documentation classifies this as a "JavaScriptlimitation." This report demonstrates that the numeric value is fully correct at every stage — the defect is in how the widget converts the value back to a string for its own internal validation.
Steps to Reproduce
1. Open any Kendo NumericTextBox.
2. Paste .000007 → value is accepted.
3. Clear the input and paste .0000007 → value is rejected, cleared, or displayed as NaN.
The threshold is exactly 1e-7, which is the point at which Number.prototype.toString() switches to scientific notation.
Bug report
Reproduction of the problem
- Open the Dojo - https://dojo.telerik.com/IbJSAmGX
- Try to reorder the rows and place for example row 1 below row 5
Current behavior
No row can be placed below row 5.
Expected/desired behavior
It should be possible to reorder and place a row at last possition
The issue is a regression starting with 2026.1.415
Environment
- Kendo/Telerik version: 2026.2.520
- Browser: [all ]
Bug report
Reproduction of the problem
- Run this dojo - https://runner.telerik.io/fullscreen/aKRBlRDR
- Quickly change the views in no particular order
Current behavior
Occasionally the k-focus class is not cleared from a previously selected view.
Expected/desired behavior
The k-focus class should be cleared
TicketID:
1715639
Environment
- Kendo/Telerik version: 2026.2.520
Bug report
DropDownList: dataItem(e.item) returns undefined when selecting across different groups
Regression since 2026.1.212
Reproduction of the problem
1. Open the next Dojo: https://dojo.telerik.com/aVJUwDTZ
2. Open the DropDownList.
3. Select an item from a group different from the one currently active/selected.
Observe the console for this.dataItem(e.item).
Current behavior
undefined is logged for this.dataItem(e.item)
Workaround: https://dojo.telerik.com/LUdpEmnY
Environment
Kendo UI version: 2026.1.212 or newer
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 text is hihlighet in Rwad-Only Editor and the user tries to paste a text, the highlighted text dissapears.
Reproduction of the problem
- Open the Dojo
- Copy some text
- 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;
}
}
Environment
- Kendo UI version: 2022.1.412
- Browser: [all ]
Bug report
Reproduction of the problem
- Open the https://dojo.telerik.com/SSFszYRK or https://dojo.telerik.com/yYFBekrt
- Copy some text
- 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
- Open this Dojo example - https://dojo.telerik.com/AWEmUSOS/7
- Open one of the Color tools.
- 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
- Open this Dojo example.
- 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
- Run the Dojo - https://dojo.telerik.com/RyeUSdVM
- Open the Dialog and then open the DropDownTree.
- 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
- Open the dojo example - https://dojo.telerik.com/pkBibvww
- 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
- Open the dojo on iPad - https://dojo.telerik.com/gWsPhtrv
- 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
- Go to this Progress Kendo UI Dojo.
- Edit any line and get into text field or numeric field.
- 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]