DataGrid column data cell popup not showing

Hello.

I have small problem with DataGridView, respectively with data cells. Data are showing properly. But because there is lot of columns with long datas, the column length visible does not show the complete string.

It would be OK, if the popup text window showed the whole value of the data cell. Don't know why, but these tooltips are not showed in the whole datagrid. I have few others DataGrids, but they are ok.

Please, can I ask you for advice?

<RadzenDataGrid Visible="@renderGrid" @bind-Value=@selectedItems Data="@dataList" TItem="IDictionary<string, object>"
    AllowFiltering="true" FilterMode="FilterMode.Advanced" AllowColumnResize="true" AllowSorting="true"
    PageSize="15" AllowPaging="true" PagerHorizontalAlign="HorizontalAlign.Left" LogicalFilterOperator="LogicalFilterOperator.Or"
    ShowPagingSummary="true" IsLoading=@isLoading ColumnWidth="200px" Sort="@ShowLoading" Page="@ShowLoading" Filter="@ShowLoading">
        <Columns>
            @foreach (var column in dataColumns)
            {
                <RadzenDataGridColumn TItem="IDictionary<string, object>" Title="@column.Key" Type="column.Value"
                Property="@GetColumnPropertyExpression(column.Key, column.Value)">
                    <Template>
                    @if (column.Key == "RecordURL")
                    {
                        @if(context.ContainsKey("RecordURL")) 
                        {
                            <RadzenLink Path="@context[@column.Key].ToString()" target="_blank" Text="Open in SFA"></RadzenLink>
                        }
                    } else {
                        @context[@column.Key]
                    }
                    </Template>
                </RadzenDataGridColumn>
            }
        </Columns>
</RadzenDataGrid>

There is a property ShowCellDataAsTooltip that controls if the cell data are shown as a tooltip. By default it's on.