Bug report

MultiSelect with virtualization scrolls automatically to the first item in the dropdown after selecting items.

Note: the issue is reproduced inconsistently.

Reproduction of the problem

1. Open the Dojo example - https://dojo.telerik.com/oSuTUhiQ/4.
2. Scroll to e.g item 10296.
3. Start selecting all the items down.

Current behavior

At some point, the component will scroll to the top of the dropdown.

Expected/desired behavior

The component should not scroll to the top, the focus should stay on the currently selected item.

Environment

• Kendo UI version: 2020.2.513
• Browser: [all]

Bug report

MultiSelect with virtualization and tagMode: single deselects items when too many items are selected.

Reproduction of the problem

1. Download and unzip the attached project.
2. Run the project.
3. Start selecting items from the first item on.

For convenience, attached is a small video demonstrating the behavior.

Note: So far I was unable to reproduce the issue in a Dojo example when trying to replicate the configuration from the project.

Current behavior

At some point, the dropdown popup will scroll up, and some items that have been selected, will be deselected. Also, the single tag for the selected items will disappear.

Expected/desired behavior

The component should not be deselecting items, should not scroll up and the tag should not disappear.

Attachments:
Project - MultiSelectIssue.zip
Video - Kendosln_Issue.zip

Environment

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

Bug report

When an empty array is passed to the MultiSelect's value method inside the deselect event, the item that is deselected remains selected in the MultiSelect.

Reproduction of the problem

1. Open this Dojo and run it
2. Expand MultiSelect's popup list and click on "All" item.

Current behavior

The different MultiSelect items are deselected except for the "All" item.

*If the "if" statement is removed from the deselect event function in the Dojo, and only the 'e.sender.value([]);' is kept, the issue is reproducing no matter of the selected item in MultiSelect's popup.

Expected/desired behavior

Calling 'e.sender.value([]);' should remove all items selected in the MultiSelect.
Click on the "Clear values" button to see the expected behavior.

Environment

• Kendo UI version: 201x.r.ddd
• jQuery version: x.y
• Browser: [all]

Bug report

Reproduction of the problem

Reproducible in the demos on mobile devices or in Chrome's emulator.
Screencast.

1. Tap over the MultiSelect input area and drag to scroll the page.

Current behavior

The dropdown opens and a js exception is thrown:

"Ignored attempt to cancel a touchend event with cancelable=false, for example because scrolling is in progress and cannot be interrupted."

Expected/desired behavior

The dropdown does not open (similarly to the way the DropDownList behaves in the same scenario).

Environment

• Kendo UI version: 2019.2.514
• jQuery version: x.y
• Browser: [Mobile Chrome XX ]

Bug report

Currently, the MultiSelect input does not have a placeholder attribute in its rendering. This leads to inconsistency with the other input components such as AutoComplete and ComboBox.

Reproduction of the problem

1. Open the Dojo example and inspect the rendering of the two components.

Current behavior

Currently, the MultiSelect 'input.k-input-inner' element does not have a placeholder attribute. As a consequence, the color of the placeholder is slightly different than the rest of the input widgets.

Expected/desired behavior

The MultiSelect widgets should have a placeholder attribute in order to be consistent with the rest of the widgets such as AutoComplete and ComboBox

Environment

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

Bug report

The MultiSelect is flickering several times when filtering and then selecting an item in Desktop mode on Safari.

Reproduction of the problem

1. Open the Virtualization demo in desktop mode in Safari on a touch device.
2. Filter the MultiSelect and select an item from the bottom of the filtered list.

Current behavior

The selected item flickers several times. (the selected item disappears and re-appears several times)

Expected/desired behavior

The selected item should not be flickering.

Environment

• Kendo UI version: 2020.3.1118
• Browser: [iOS Safari ]

Bug report

In MultiSelect when the value is set initially and the mapValueTo option is set to 'dataItem', if the user first open and close the popup, the last item can not be removed and an error 'c.select(...).done is not a function' is thrown.

Reproduction of the problem

1. Open the Dojo example. - https://dojo.telerik.com/@NeliKondova/UCesAQen
2. Open the popup and scroll to the "Hungry Owl All-Night Grocers" item
3. Close the popup
4. Try to remove the "Hungry Owl All-Night Grocers" from the input

As the Dojo above does not use a remote valueMapper below is a sample project where a remote valueMapper method is implemented
WebApplication3.zip

Current behavior

The last item can not be removed and an error 'c.select(...).done is not a function' is thrown in the browser`s console.
The other items except the last one can be removed as expected. Also, all items can be removed initially in case the popup has not been opened and scrolled to the last item from the value.

Expected/desired behavior

It should be possible to remove all items displayed in the MultiSelect input, even in a scenario where the popup has been opened and closed.

Environment

• Kendo UI version: 2023.2.606
• Browser: [all ]

Bug report

When the MultiSelect is used inside the Grid as a custom editor, the component gets closed on focus or when the user tries to select a second item.

Reproduction of the problem

1. Open the Dojo - https://dojo.telerik.com/oCPdsViX.
2. Click the 'Edit' button and try to select two items in the third column 'Dont work'.

Current behavior

The first item is correctly selected, however, the pop-up is closed every time the user clicks in the input, thus it is not possible to select a second item.

Expected/desired behavior

The popup should not close on focus the MultiSelect input and it should be possible to select multiple items.

The issue is a regression starting with 2025.2.520

Workaround

The MultiSelect is not closed when the downArrow is enabled (column 'Works')

Environment

• Kendo UI version: 2025.2.520
• Browser: [all ]

Bug report

Setting the delay option of the MultiSelect doesn't have an effect.

Regression introduced with 2024.1.130

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/oyaHULOv/4
2. Type some text to filter the data

Current behavior

The 1 second delay is not respected and the data is filtered instantly

Expected/desired behavior

There should be 1 second delay before the data is filtered

Environment

• Kendo UI version: 2024.1.319
• Browser: [all]

The multiSelect supports several keyboard shortcuts as documented in https://demos.telerik.com/kendo-ui/multiselect/keyboard-navigation. However, when e.g. a KeyDown event is triggered (and handled) by the widget, its propagation is not stopped. This behavior can be witnessed in this DOJO.

In our case, we e.g. use multiSelects inside dialog windows that can be closed via ESC. When pressing ESC while a multiSelect is focused and open, this not only closes the multiSelect (as expected), but also closes the dialog.

The multiSelect should stop the propagation of events that it handled.

When using the Multiselect with Javascript Api in following order:

- Disable

- Select

- Enable

The Multiselect Control is enabled, but the Items are still disabled and therefore cannot be removed by the X.

Can be reproduced in the official demo (see Screenshot): https://demos.telerik.com/kendo-ui/multiselect/api

Bug report

If the MultiSelect open event is prevented, the animation container has display:block style, blocking inputs beneath the MultiSelect

Reproduction of the problem

1. Open this example - https://dojo.telerik.com/EqOSOReM/38
2. Type something in the MultiSelect and blur, without selecting an item.
3. Focus the MultiSelect again
4. Try to focus the input beneath

Regression introduced with 2022.2.621

Workaround: manually hide the animation container - https://dojo.telerik.com/EqOSOReM/38

Current behavior

The k-animation-container has display:block style, preventing the input beneath it from being focused

Expected/desired behavior

The k-animation-container should have display:none style.

Environment

• Kendo UI version: 2023.1.117
• Browser: [all]

Bug report

If you filter the MultiSelect and then blur it, a read request occurs that retrieves all the data. Then, if you open the MultiSelect, another read request triggers with the same data as response

Reproduction of the problem

1. Open the Server Filtering Demo - https://demos.telerik.com/kendo-ui/multiselect/serverfiltering
2. Open the DevTools network tab and type some text to filter the data, e.g. "Cha"
3. Select an item from the filtered data and blur the input - a read request occurs that returns the entire data.
4. Open the MultiSelect again - the same read request with the same data occurs.

Current behavior

Duplicated read request occurs when you blur and reopen the MultiSelect

Expected/desired behavior

No duplicated read requests should occur.

Environment

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

The documentation states that the Kendo UI MultiSelect widget' options contain a "messages" property that allows the customization of tooltips etc. In the corresponding TS typing, this property is not defined.

Bug report

When MultiSelect is used inside Grid columns filter, it is closing immediately after clicked in the MultiSelect filter input.

Reproduction of the problem

1. Open the Knowledge Base article - https://docs.telerik.com/kendo-ui/knowledge-base/multiselect-used-for-column-filtering
2. Click on the 'Name' column filter icon to open the filter popup.
3. Click in the MultiSelect input filter.

Current behavior

The filter popup is closing first time when clicked. Next time when the filter popup is opened it is not rendered properly.

Expected/desired behavior

The filter popup should not be closed when clicking in the Multiselect filter input. The MultiSelect list items should be rendered below the filter input.

The issue is a regression introduced in 2022.1.301 with the following commit telerik/kendo@bb73744

Environment

• Kendo UI version: 2022.2.512
• Browser: [all ]

Bug report

When there are items selected in the MultiSelect and the close icon is clicked the popup is opened for a moment

Reproduction of the problem

1. Open the Demo - https://demos.telerik.com/kendo-ui/multiselect/index
2. Click the close icon in the first MultiSelect

Current behavior

The popup is opened for a moment

Expected/desired behavior

The popup should not get opened unexpectedly.

The issue is a regression introduced in 2022.1.412 version with the following commit - telerik/kendo@7953a90

Environment

• Kendo UI version: 2022.2.512
• Browser: [all ]

Hello ladies and gentlemen.

Readonly mode does not work correctly in Bootstrap 4 Theme.

If the MultiSelect is put into readonly mode programmatically and has a value and clearButton option is true - clear button is displayed and the value can be cleared.

https://dojo.telerik.com/UsiXAZuv

Best regards,
Eduard Töws

Hello dear support,

I ve a strange behavior that I may qualify as bug.

I ve tried to reproduce here https://dojo.telerik.com/osEPIvOG wit a result shown in this animated gif here attached (DPSN-13445).

Basically what's happening is that if your are selecting / clearing elements that looked to be in different pages (view), the dataItems() function does not return the correct value, but some previous item.

This "bug" is always reproducible;

Please let me know if there is a bad implementation (I m using here basic Telerik sample) or if there is a workaround, or if I can expect a fix;

By advance thx for your swift reply.

Bug report

MultiSelect doesn't focus the first suggested item of the popup

Reproduction of the problem

1. Open this Dojo
2. Make sure it has at least 2 values set on initialization
3. Write some text until the popup opens with some suggestions

Current behavior

The first suggestion of the popup is not focused as expected.

Expected/desired behavior

The first suggestion should be focused.

Environment

• Kendo UI version: 2020.3.1118 or later
• Browser: [all]

Bug report

Reproduction of the problem

Dojo example.

1. Focus the MultiSelect and type in "c". The data is filtered and "Canada" is displayed in the list.
2. Select "Canada".
3. Click in the MultiSelect's input area.

Current behavior

The filter is cleared and all the items in the dataSource are listed, even though "c" remains in the input area.
If step 2 is omitted, the filter is not cleared.

Expected/desired behavior

The filter should not be cleared. After step 3 the MultiSelect should still show only "Canada" in the list of items.

Environment

• Kendo UI version: 2020.3.1118
• jQuery version: x.y
• Browser: [all]