<TelerikNumericTextBox @bind-Value="@width" Step="20" Min="0" Max="800"></TelerikNumericTextBox>
@code{
    int width { get; set; } = 200;
}
<div style="display:flex; flex-direction: row;">
    <div style="width: @(width)px; background: yellow;">
        some content on the left. When this is here, resizing tiles cannot use the full width of the tile layout
        - it stops short with the offset by this element due to the flex layout.
        Change the width of this element to see the effect - as you increase you will stop being
        able to resize 1column tiles at all. If you decrease, eventually you will be.
    </div>
    <div style="position: relative; display: block;"> @* THE WORKAROUND - REMOVE TO SEE THE PROBLEM *@
        <TelerikTileLayout ColumnWidth="200px"
                           RowHeight="150px"
                           Width="700px"
                           Columns="3"
                           Resizable="true">
            <TileLayoutItems>
                <TileLayoutItem HeaderText="Panel 1">
                    <Content>Regular sized first panel.</Content>
                </TileLayoutItem>
                <TileLayoutItem HeaderText="Panel 2">
                    <Content>You can put components in the tiles too.</Content>
                </TileLayoutItem>
                <TileLayoutItem HeaderText="Panel 3" RowSpan="3">
                    <Content>This tile is three rows tall.</Content>
                </TileLayoutItem>
                <TileLayoutItem HeaderText="Panel 4" RowSpan="2" ColSpan="2">
                    <Content>This tile is two rows tall and two columns wide</Content>
                </TileLayoutItem>
            </TileLayoutItems>
        </TelerikTileLayout>
    </div>
</div>

@inject IJSRuntime js

<p>Tab through the textboxes:</p>

<input />

<TelerikTileLayout Columns="2"
                   RowHeight="200px"
                   Resizable="false"
                   Reorderable="false"
                   Navigable="false"
                   Class="tilelayout-tabindex-remove">
    <TileLayoutItems>
        <TileLayoutItem HeaderText="Tile 1">
            <Content>
                <p>TileLayout Navigable="false" - will focus the inner textbox and will not focus the tiles.</p>
                <input />
            </Content>
        </TileLayoutItem>
        <TileLayoutItem HeaderText="Tile 2">
            <Content>Tile 2 content.</Content>
        </TileLayoutItem>
    </TileLayoutItems>
</TelerikTileLayout>

<input />

<TelerikTileLayout Columns="2"
                   RowHeight="200px"
                   Resizable="false"
                   Reorderable="false"
                   Navigable="true">
    <TileLayoutItems>
        <TileLayoutItem HeaderText="Tile 1">
            <Content>
                <p>TileLayout Navigable="true" - will not focus the inner textbox and will focus the tiles. Focus the textbox with Enter when on the tile.</p>
                <input />
            </Content>
        </TileLayoutItem>
        <TileLayoutItem HeaderText="Tile 2">
            <Content>Tile 2 content.</Content>
        </TileLayoutItem>
    </TileLayoutItems>
</TelerikTileLayout>

<input />

<script suppress-error="BL9992">

    function removeTabindexFromTiles(selector) {
        var tileLayout = document.querySelector(selector);

        if (!tileLayout) {
            return;
        }

        tileLayout.querySelectorAll(".k-tilelayout-item").forEach(el => {
            el.removeAttribute("tabIndex");
        });
    }

</script>

@code {
    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender)
        {
            await Task.Delay(1); // ensure HTML is ready
            await js.InvokeVoidAsync("removeTabindexFromTiles", ".tilelayout-tabindex-remove");
        }

        await base.OnAfterRenderAsync(firstRender);
    }
}