Description

When the ComboBox is bound with the OnRead event, after filtering and pressing the Tab key the highlighted item that matches the user input is not selected. If the ComboBox is bound through the Data parameter, the highlighted item is selected as expected.

Steps To Reproduce

1. Run this REPL example: https://blazorrepl.telerik.com/GKOwYyuD25UuABfR07
2. Focus the ComboBox and type in "BMW"
3. Press the Tab key.

Actual Behavior

The ComboBox is blurred and the BMW item is not selected.

Expected Behavior

The ComboBox is blurred and the BMW item is selected.

Browser

All

Last working version of Telerik UI for Blazor (if regression)

No response

Bug report

Reproduction of the problem

(bug report only)

1. Run this example: https://blazorrepl.telerik.com/mUOqQflm56D4xScx54
2. Select a font in the FontFamily dropdown.
3. Click the UnorderedList tool in the Editor’s toolbar.
4. A bullet is added and the FontFamily tool loses its value.
5. Click right after the added bullet.
6. Once again select a font in the FontFamily drodown.
7. Click the UnorderedList tool in the Editor’s toolbar to remove the bullet.
8. The FontFamily tool loses its value.

Current behavior

(optional)
Provide additional information if the steps for reproducing the faulty behavior are not sufficient to describe the issue.

Expected/desired behavior

The FontFamily tool should keep its value when an unordered list is added/removed.

Environment

• Kendo/Telerik version: 14.0.0
• Browser: [all]

I bind the TelerikEditor Value to a property that is reloaded with different unrelated content. The editor keeps the Undo/Redo stack so for the "second" content I can Undo back to the "first" content. I'd like to be able to clear the Undo stack.

I am trying to look at the times 7pm - midnight.  But if I set the end time to midnight, I get an error that the end time has to be greater than the start time.  How do I set the timeline to show 7pm - midnight or 8pm - 2am?

I tried including the next date in the EndTime but the Scheduler does not take the date into consideration, it checks only the time portion.

Bug report

Reproduction of the problem

(bug report only)

Regression introduced in version 14.1.0.

1. Run this example: https://blazorrepl.telerik.com/mAaNuhlQ07uvfUs053
2. Expand Work Files folder and select the Documents or Images folder.

Current behavior

(optional)

The FileManager does not visualize the files nested in the folders.

Expected/desired behavior

The FileManager visualizes the files nested in the folders.

Environment

• Kendo/Telerik version: 15.0.1
• Browser: [all ]

• Create a ListView
• Create a TimePicker within the ListView
• Set the Adaptive Mode on the TimePicker to Auto (This is key, if this property is removed it works)
• Run the page and switch to a mobile view format within the browse

@page "/test-timepicker-listview"

<h3>TimePicker in ListView Test</h3>

<TelerikListView Data="@TestItems" Width="100%">
    <HeaderTemplate>
        <div style="padding: 10px; background-color: #f0f0f0; font-weight: bold;">
            Time Entry Items
        </div>
    </HeaderTemplate>
    <Template>
        <div style="padding: 15px; border-bottom: 1px solid #ddd;">
            <div style="margin-bottom: 10px;">
                <strong>Item:</strong> @context.Name
            </div>
            <div style="display: flex; align-items: center; gap: 10px;">
                <label>Start Time:</label>
                <TelerikTimePicker @bind-Value="@context.StartTime" Format="hh:mm tt" Width="150px"
                    AdaptiveMode="AdaptiveMode.Auto" />
            </div>
            <div style="display: flex; align-items: center; gap: 10px; margin-top: 10px;">
                <label>End Time:</label>
                <TelerikTimePicker @bind-Value="@context.EndTime" Format="hh:mm tt" Width="150px"
                    AdaptiveMode="AdaptiveMode.Auto" />
            </div>
        </div>
    </Template>
</TelerikListView>

@code {
    private List<TimeEntryItem> TestItems { get; set; } = new();

    protected override void OnInitialized()
    {
        // Initialize with some test data
        TestItems = new List<TimeEntryItem>
{
new TimeEntryItem { Id = 1, Name = "Morning Shift", StartTime = new DateTime(2025, 11, 18, 8, 0, 0), EndTime = new
DateTime(2025, 11, 18, 12, 0, 0) },
};
    }

    public class TimeEntryItem
    {
        public int Id { get; set; }
        public string Name { get; set; } = string.Empty;
        public DateTime StartTime { get; set; }
        public DateTime EndTime { get; set; }
    }
}

Bug report

Reproduction of the problem

(bug report only)
1. Run this example: https://blazorrepl.telerik.com/cUaBGOOZ34pkp6wB57
2. Inspect the MultiSelect’s input.
3. Click within the component’s input area, to open its popup.

The issue is also reproducible in the other dropdown components: https://blazorrepl.telerik.com/GUurGmvw32oPqGYu03

Current behavior

(optional)
When the dropdown opens, an aria-controls attribute is applied to the MultiSelect’s input. Its value does not match any existing DOM element.

Expected/desired behavior

The value of the aria-controls attribute should point at an existing element (e.g., the popup’s list element: https://www.telerik.com/blazor-ui/documentation/components/multiselect/accessibility/wai-aria-support#multiselect-wrapping-element ). But in this case the MultiSelect is not bound to data and a list element is not rendered in the popup.

Environment

• Kendo/Telerik version: 14.1.0
• jQuery version:
• Browser: [all ]

The PDF Viewer may open certain files as empty, even though they have text and image content.

The issue occurs in version 14.0.0.

(Test file available in private ticket 1718294)

In the FileManager in a serverc app, click the New Folder button. Try to enter folder name - depending on the server-client latency, characters may be erased as you type them. The only solution in these cases is to type slower or use a custom tool to create new folders.

The problematic behavior can also be observed when attempting to rename a file or folder through the Rename command in the built-in context menu. 

When double-clicking a task in the Gantt Timeline, the popup edit form may not appear. Instead, the vertical blue band for task dragging may show.

The problem is more likely to occur when using a touchpad.

We have a Blazor project that normally takes 20 seconds to build.

But after upgrading Telerik.Licensing from 1.8.2 to 1.9.0/1 the build takes about 60 seconds.

First we upgraded all telerik references with this effect. Now we downgraded all to the version that is supported by 1.8.2.

In the project, the only change I make is to change the version from 1.8.2 to 1.9.0 or later, then the build goes from 20 seconds to 60 seconds, no other changes made...

I have tried Rebuild, Restarts etc...

In the build detailed output, it is the csc command that takes longer times.

Steps to reproduce
Reproducible with UI for Blazor, as well as UI for ASP.NET Core (PDF.js and DPL processing)

1. Open the attached file in the PDFViewer.

Actual Behavior
The content is visualized distorted, large parts of it are missing, layout is messed up.

Expected Behavior
The document content is visualized properly, as it is with: https://mozilla.github.io/pdf.js/web/viewer.html

Example:

<PageTitle>Home</PageTitle>

<div>
    <TelerikTextBox Width="20rem" Placeholder="Pallet" DebounceDelay="1000" @bind-Value="@_textInput" OnChange="@(async (input) => await OnInputChanged(input))" />
</div>
<p>@_textInput</p>


@code {
    private string? _textInput;

    private async Task OnInputChanged(object input)
    {
        Console.WriteLine($"Immediate: function parameter: {input}, bound variable: {_textInput}");
        await Task.Delay(1000);
        Console.WriteLine($"Delayed: function parameter: {input}, bound variable: {_textInput}");
        //Make the OnChange event receive the immediate value when the DebounceDelay is set
    }
}

The DebounceDelay is set to 1 second to highlight the behavior, although we have observed it with delays less than 100 milliseconds when the input is from a barcode scanner and the Enter is part of the scan. Start the sample, type "123" in the input, and hit enter within 1 second.

The output in the console is:
Immediate: function parameter: , bound variable:
Delayed: function parameter: , bound variable: 123

I have a cascading DropDownList scenario with virtual scrolling. When the first DropDownList changes value, the second one should reset its scrollbar to the top, because it now contains new data. This doesn't happen.

Here is a REPL test page.

===

ADMIN EDIT

===

As a workaround for the time being, you may track when the value is changed in the parent DropDownList to dispose and re-initialize the child DropDownList.

Here is an example: https://blazorrepl.telerik.com/mdafHabk585ZtzyV54.