https://stackblitz.com/edit/angular-niog8n-eldomz?file=app%2Fapp.component.ts

I recently received an email from one of our users stating that the scroll buttons on the tabstrip have stopped working. I have just upgraded to Angular 17 and latest of progress controls so not sure if that is what did it but these buttons have been working since implementation.  I am puzzled as to what is now missing and or caused the buttons to stop working. They do display correctly when the screen size changes and not all tabs are on the screen. However, when you click either forward or back, nothing happens.

I anticipate that I will be asked to create a reproduction of this and send it to kendo, but was hoping that someone could take a look at our application to see if something is missing or if it can be determined what is causing the issue? This is a huge application and depends on data to run so it would take quite some time to get it down to something I can send as a repro.  See page  https://test.tropicos.org/name/25509881.

What makes it worse is that we also have another application that was spawned from the shell the Tropicos app and for the most part uses the same packages. This application also gets updated at the same time as Tropicos as well.  This application however is not seeing the same problems with tab strip buttons. See https://test.livingcollections.org/taxon/277173. 

If I must spend the time to strip the application down to a page that causes the issue, I can. But, again, this would take quite a bit of time and we are a small development shop so hoping looking at the apps I posted will help to find the issue.

In MultiColumnComboBox .k-table-header-wrap sets extra border-right-width, in result cells and column vertical separator is not consistent.

Can be reproduced in telerik demo page Angular Dropdowns MultiColumnComboBox Data Binding - Kendo UI for Angular (telerik.com)

When dateinput format is "d/M/y" and "allowCaretMode" is enabled, users are unable to enter valid dates. Tested with dateinput and datepicker components.

Steps to reproduce

1. Setup a kendo-dateinput component with "allowCaretMode" set to "true" and the "format" set to "d/M/y" (see stackblitz below).
2. Enter a valid single-digit day and valid single-digit month into the input
3. Try typing a year
4. Observe that only one character of the year can be entered and the input locks up, preventing the user from completing a valid date.

Stackblitz example

https://angular-x4rvxqyp-qfq5b7mj.stackblitz.io

Expected Behaviour:

The user should be able to enter a full year after typing a valid single-digit day and month.

Observed Behaviour:

After entering a single-digit day and month, the input locks up, preventing the user from typing more than one character for the year. This prevents users from entering valid dates, making the input unusable in this scenario.

I couldn’t find an existing bug report related to this issue. Could you confirm whether this has already been reported or provide guidance on a potential fix or workaround?

Thanks

While the grid is initially loading data, the "No records available." message is confusing and provides no useful information.

Expected behavior - when the grid is initially loading, don't display the message as the rows/data might very well appear

To reproduce basically just go to the grid demo page (refresh if needed) and pay attention to the grid loading: https://www.telerik.com/kendo-angular-ui/components/grid/data-binding/

Example in our project - intuitively you'd think that the grid has no records until you see the loader; in any case, the message looks out of place:

It seems that whenever a task crosses the date where the daylight saving time switch appears everything on the gantt's week view gets shifted by 1 hour.

This stackblitz shows 2 Gantts. The first one has correct positioning, the second one appears to be bugged.

In this picture, you can see that in the 1st Gantt `Item 1` is slightly shifted to the right and covers Thursday and Friday. That's because its date is specified in UTC as `2025-04-03T00:00:00.000Z` which, for me in the UK, will result in `01:00:00.000`.
However, in the second Gantt `Item 1` now fully covers Thursday and doesn't extend to Friday even though the start and end dates are the same as in the first Gantt.

You might get slightly different positioning based on your time zone. The description is written based on the UK time zone.

It also affects drag-and-drop marquee. If you try to drag the right side of item 1, you'll see that it will show Saturday even before it starts covering Saturday.

Expected behaviour: Item 1 has to be positioned identically on both timelines

Kendo timeline range in the gantt can be miscalculated if children have start and end days earlier that their parent.

This happens to due oversight in TimelineBaseViewService.getRange function. Two variables startResult and endResult are calculated using only top-level entities from the supplied data hierarchy.

This stackblitz shows 2 cases.

1. The item is out of the bounds on the left due to an earlier start date than its parent's start date.
   
2. The item is rendered either as three dots or out of bounds on the right side (depends on the browser. Firefox tend to display three dots, Chrome clips the right side) due to end date being later than its parent's end date.
   

That's mostly visible on Day and Week timelines, however I believe can be reproduced on monthly and yearly views if the date spread is large enough.

Currently tooltip can be rendered outside of the gantt component if item on the timeline is long enough to be outside of the timeline viewport.

Adjusting [taskTooltipOptions] doesn't help as tooltip will still be outside of the timeline viewport.

Steps to reproduce.

1. Open Stackblitz
2. Scroll to Sat 19/04
3. Hover mouse of Sat 19/04 slot

The tooltip data isn't loaded properly when the mouse lands on the item due to the horizontal scroll rather than moving moues manually. This behaviour is mostly noticed on touchpads due to gestures.

See stackblitz.

Steps to reproduce

1. Place the mouse pointer before any item on the gantt
2. Scroll to the right or left without moving the mouse so the pointer stops on the item

It's important not to move the mouse, as soon as any action like movement or click happens the tooltip loads the data.

See the attached video.

When virtual is true for a multiselect and checkboxes are set to true, there is a bug which results in multiple items being selected.

To reproduce, one needs to scroll down a long list of items.  The amount to scroll seems random but might have something to do with the itemHeight setting.  When clicking directly inside the checkbox, two items are selected at once - the item selected, and one other seemingly random item.   This does not happen if the click selection event happens inside the item, but not the checkbox.

I have reproduced this inside this code sandbox: https://codesandbox.io/p/sandbox/mystifying-shirley-2qxn32

https://stackblitz.com/edit/angular-mqywpa?file=src%2Fapp%2Fupload.component.ts

When using kendoTooltip directive on the upload component - tooltips are positioned in invalid position somewhere on the app.

cancel, delete, retry tooltips.

When increasing the browser zoom level while using a kendo-splitter with two kendo-splitter-pane elements, one of the panes exceeds the boundaries of the kendo-splitter. As a result, part of the content becomes hidden.

Steps to Reproduce:

1.  Use a  kendo-splitter with two kendo-splitter-pane elements.
2.  Resize one of the panes
3.  Increase the browser zoom level.

Template:

<kendo-splitter>
  <kendo-splitter-pane [collapsible]="true" size="30%">
    <div>
      <h3>Inner splitter / left pane</h3>
      <p>Resizable and collapsible.</p>
    </div>
  </kendo-splitter-pane>

  <kendo-splitter-pane>
    <div>
      <h3>Inner splitter / center pane</h3>
      <p>Resizable only.</p>
    </div>
  </kendo-splitter-pane>

  <kendo-splitter-pane [collapsible]="true" size="30%">
    <div>
      <h3>Inner splitter / right pane</h3>
      <p>Resizable and collapsible.</p>
    </div>
  </kendo-splitter-pane>
</kendo-splitter>

When typing into the Angular Datepicker on iOS devices, the page scrolls unexpectedly after entering the first character of any date part (day, month, year). The scroll occurs on each subsequent character input (2nd, 3rd, etc.), making it difficult to use the input field.

Steps to Reproduce:

1. Open a webpage with a Kendo UI Datepicker on an iPhone (iOS v16+, any model). Ensure the datepicker is positioned far enough down the page that scrolling is required to reach it. Example can be seen at https://angular-v7j3ag.stackblitz.io/
2. Focus on the Datepicker input field.
3. Enter a date manually using the on-screen keyboard.
4. After typing the first character into any date part, the page behaves normally, but it scrolls up to the top of the page on subsequent character inputs.

Expected Behaviour: The page should remain in place when typing, allowing smooth input without scrolling.

Observed Behaviour: The page scrolls up after entering the second character of any date part (day, month, or year) and continues to do so on each further input.

Reproduction: The issue was recreated using Kendo's own Datepicker example (with added spacing to demonstrate the scroll behaviour). https://stackblitz.com/edit/angular-v7j3ag

Affected Platforms:

• All iPhone models (tested 11 - 15) with iOS v16+ (reproducible on Safari and Chrome browsers).
• Does not occur on desktop or Android devices.

Additional Notes:

• A video demonstrating the behaviour is attached.
• This has been reproduced on both BrowserStack and physical iPhone devices.

I couldn’t find an existing bug report related to this issue, so I would appreciate it if you could confirm whether this has been reported or provide further guidance.

The page numbers and total items within a pager do not appear to respect the currently loaded i18n locale. For example, there's no comma in the thousands place for the en locale. What makes me believe this is a bug is that the page input which can appear DOES have i18n applied to it so the discrepancy is clearly visible between the two.

As there's no demo with such large page numbers I've created an example as well as a screenshot:
B187rdik (forked) - StackBlitz

Hello,

The control https://www.telerik.com/kendo-angular-ui/components/utils/draganddrop/drag-container/ cannot be used on mobile devices. I am not able to move the element in its position. I also tested it directly on a mobile device and it doesn't work there either.

Please provide an option to use the utility on mobile devices.

Hi ,

I want the kendoGridFocussable to apply the FocusableDirective on an anchor tag. This should allow the user to reach the anchor element using only the arrow keys without pressing Enter. (Example : Please, check out the following StackBlitz demo: https://stackblitz.com/edit/angular-rqqzam)

Regards,
Uzma

When using the "checkBy" attribute to configure the data field for the key definition, then the indeterminate state of parent nodes is broken.

To reproduce the issue have a look to this StackBlitz: https://stackblitz.com/edit/angular-okpokx

Dear Kendo-Supportteam,

We are experiencing an issue with the Editor component.

It turns out that setting the iframe input to false causes the paste event to be triggered twice.
Once as documented before the valueChange event and once seemingly as the native paste event after valueChange.

There are multiple issues resulting from this.

1. Calling preventDefault on the initial event also does NOT prevent the native event from triggering directly after. Only the following events from the Editor itself are prevented.
2. As the next event is the actual native event of type ClipboardEvent, the interface is different from what the type definitions suggest. Leading to errors, if the attached method tries to just call isDefaultPrevented on the event.

It is quite easy to reproduce this from your event demonstration examples by just setting the iframe input to false and maybe also trying to call isDefaultPrevented in the respective paste event handler.

Kind Regards,
Hannah