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1 answer
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When I use minHeight and minWidth for window these props just don't work, even I add these props for inline style in Window component. 



Vessy
Telerik team
 answered on 16 Feb 2026
1 answer
63 views
Hello!

I'm using KendoReact PDFViewer and I've encountered a problem with the URL prop not working with regular HTTP URLs, for example:

<PDFViewer url="https://example.com/sample.pdf" />

The PDF simply won't load.

Please help:

In what cases does the URL prop actually work in PDFViewer?
Vessy
Telerik team
 answered on 13 Feb 2026
1 answer
336 views
Hi!

Is there any reason why element with XXX text is not highlighted just as other elements in 'opened hierarchy'?

Thanks!
Bohdan




Filip
Telerik team
 answered on 12 Feb 2026
2 answers
77 views

Hi Team, 

We have a KendoReact Grid where (effectively) all rows are in edit mode (we set edit so each valid item is editable). One of the editable columns uses a custom edit cell that renders a NumericTextBox (quantity).

We also have a toolbar with an Input used to search/filter products. The toolbar Input onChange is debounced (lodash debounce), and on each debounced change we update the Grid filter/state.

Problem: when the debounced toolbar Input triggers a state update and the Grid re-processes data and re-renders rows, SOMETIMES one of the quantity NumericTextBox inputs auto-focuses. This steals focus from the search input while the user is still typing. The user then unknowingly continues typing, but now their keystrokes go into a quantity cell instead, causing incorrect quantities / incorrect lines ordered.

This is a serious UX/data integrity issue because users can accidentally edit quantities while they intend to keep typing the product search.

Expected Behaviour
When the user is typing in the toolbar search Input, focus should remain on that Input across Grid state changes (sorting/filtering/paging), and no cell editor should automatically take focus unless the user explicitly clicks into a cell or we explicitly programmatically focus it.

Source
I've tried to duplociate the error using a simplistic kendo example without luck but I've included the LineItemsGrid, LineItemsToolbar and the QuantityEditCell in this stackBlits for ref, see `MyFiles`. Note that this is NOT a working demo. There is just too much going on contextually to make a static working demo.

https://stackblitz.com/edit/react-2bkcpcjg?file=MyFiles%2FQuantityEditCell.tsx,MyFiles%2FLineItemsToolbar.tsx,MyFiles%2FLineItemsGrid.tsx
Any advise or way to tweak out where the bug could be would be helpful.

Thanks,
Grant

Grant
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Iron
Iron
 answered on 10 Feb 2026
1 answer
68 views

1. Scroll down a bit so that skip is != 0

2. Add a new item to the start of the list

3. Scroll up, the Grid becomes blank.

Repro: https://stackblitz.com/edit/react-jqcvjbpj

Filip
Telerik team
 answered on 05 Feb 2026
1 answer
176 views
Hi,

I noticed that grid column becomes not resizable when using tooltips in grid, even if thProps are passed.

I edited stackblitz of this official example:
React Render Tooltips for Grid Cells - KendoReact

got:
myEditedExample

Is it a bug or am I missing something?

Thanks,
Bohdan
Yanko
Telerik team
 answered on 04 Feb 2026
1 answer
212 views

Hi, 

I am looking for a solution for locked custom column and I bumped into some example, but seems like it's already outdated and not working anymore at least due to missing 'cell' property in GridColumn component and missing tdProps in GridCellProps interface.

Is there any chance to bring the example up-to-date?
or are there any fresh articles/knowledge-base related to this problem?
example

related post here:
related forum post

Thanks,
Bohdan

Vessy
Telerik team
 answered on 03 Feb 2026
1 answer
47 views
Hello.

After adding 150-200 cards UI starts to lag.

What are the best practices to optimize KendoReact TaskBoard performance with a large number (e.g. 500+) of cards?

Thanks. 
Filip
Telerik team
 updated answer on 26 Jan 2026
1 answer
103 views

We have a strange issue with the newest Grid component. I have this issue recreated here: https://codesandbox.io/p/devbox/proud-forest-v49cp6

The upper most input element is just to trigger state change. To see the issue:

  1. Click on Edit in any row in the grid to start inline editing of that row
  2. Start typing in the upper most input field (above the grid) 
  3. After each letter the Grid will get focus preventing me from writing in the input!!!

Now if I enable editing in two rows at once (two rows are in edit state) this behavior is absent and I can normally type in my input above the grid. What is wrong?

 

Filip
Telerik team
 updated answer on 09 Jan 2026
1 answer
62 views

Hi,

If Grid's last column has a long title, trying drag-n-drop to group that last column will get stuck. The mouse cursor's title box is too wide, it overflows to outside of the grid, then the cursor can't be moved anymore.

To reproduce, use this example - https://www.telerik.com/kendo-react-ui/components/grid/grouping, resize the browser to a smaller size so that "Category Name" column title fill up the entire column width. Then try to drag "Category Name" column.

Please see the attached screenshot too.

Thanks,

Jie

Vessy
Telerik team
 answered on 06 Jan 2026
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