SplitButton menu stays open when using Tooltip

Hi there,

I've ran into a problem where if you use tooltip on SplitButtons their menus stay open when you click on another SplitButton menu where the expected behavior is that the old menu should close.

I'm using Radzen 5.9.1.

Here is some code to reproduce this issue.

@inject NotificationService NotificationService
@inject TooltipService TooltipService

<RadzenStack Orientation="Orientation.Horizontal" AlignItems="AlignItems.Center" Gap="1rem" Wrap="FlexWrap.Wrap">
    <RadzenSplitButton Click=@(args => OnClick(args, "SplitButton with text")) Text="SplitButton" MouseEnter="@(args => ShowTooltip(args, "Button 1"))">
        <ChildContent>
            <RadzenSplitButtonItem Text="Item1" Value="1" />
            <RadzenSplitButtonItem Text="Item2" Value="2" />
        </ChildContent>
    </RadzenSplitButton>
    <RadzenSplitButton Click=@(args => OnClick(args, "SplitButton with text")) Text="SplitButton" ButtonStyle="ButtonStyle.Secondary"  MouseEnter="@(args => ShowTooltip(args, "Button 2"))">
        <ChildContent>
            <RadzenSplitButtonItem Text="Item1" Value="1" />
            <RadzenSplitButtonItem Text="Item2" Value="2" />
        </ChildContent>
    </RadzenSplitButton>
</RadzenStack>

@code {
    void OnClick(RadzenSplitButtonItem item, string buttonName)
    {
        if (item != null)
        {
            NotificationService.Notify(new NotificationMessage { Severity = NotificationSeverity.Info, Summary = "SplitButton Item Clicked", Detail = $"{buttonName}, item with value {item.Value} clicked" });
        }
        else
        {
            NotificationService.Notify(new NotificationMessage { Severity = NotificationSeverity.Info, Summary = "SplitButton Clicked", Detail = $"{buttonName} clicked" });
        }
    }

    void ShowTooltip(ElementReference element, string message)
    {
        TooltipService.OpenOnTheTop(element, message);
    }
}