Custom ToolTip add markers on area chart

I'm currently building a chart with a stacked area and a unstacked line. Due to it not being possible to stack and area chart and add an unstacked line, I've had to make the area series unstacked and manually compute the offsets in their Y values to make it look correct. However, now the values are incorrect in the tooltips so I'm trying to add custom tooltips. Using default tooltips I get this:

When I add my custom tooltip into the chart component...

<ApexPointTooltip>
    <div class="m-2">
        @{
            var point = context.DataPoint;
            <div class="m-0 p-3">
                <RadzenText TextStyle="TextStyle.Subtitle1"
                            Text="@DateTimeOffset.FromUnixTimeMilliseconds(point.Items.FirstOrDefault()?.WeekStart.ToUnixTimeMilliseconds() ?? 0).ToString("dd MMM yyyy")" />
                @if (showFinishedAsSeparate)
                {
                    <RadzenText Text="@($"Finished Unmet: {point.Items.FirstOrDefault()?.FinishedMetDemand.ToString("F2")} FTE")" />
                }
                <RadzenText Text="@($"Cancelled: {point.Items.FirstOrDefault()?.CancelledDemand.ToString("F2")} FTE")" />
                <RadzenText Text="@($"Unconfirmed Unmet: {point.Items.FirstOrDefault()?.UnconfirmedUnmetDemandFTE.ToString("F2")} FTE")" />
                <RadzenText Text="@($"Unconfirmed Met: {point.Items.FirstOrDefault()?.UnconfirmedMetDemandFTE.ToString("F2")} FTE")" />
                <RadzenText Text="@($"Confirmed Unmet: {point.Items.FirstOrDefault()?.ConfirmedUnmetDemandFTE.ToString("F2")} FTE")" />
                <RadzenText Text="@($"Confirmed Met: {point.Items.FirstOrDefault()?.ConfirmedMetDemandFTE.ToString("F2")} FTE")" />
                @if (showFinishedAsSeparate)
                {
                    <RadzenText Text="@($"Finished Met: {point.Items.FirstOrDefault()?.FinishedUnmetDemand.ToString("F2")} FTE")" />
                }
                <RadzenText Text="@($"RSE Availalble: {point.Items.FirstOrDefault()?.ProjectFTE.ToString("F2")} FTE")" />
            </div>
        }
    </div>
</ApexPointTooltip>

...the chart now renders with markers and looks awful but the values are now correct:

I have the following set in the chart options object which appears to do nothing:

Markers = new Markers
{
    Size = 0
},
Tooltip = new ApexCharts.Tooltip
{
    Marker = new TooltipMarker
    {
        Show = false
    }
}

Is this desired behaviour or a bug? If desired, how can the default behaviour be achieved?

apexcharts / Blazor-ApexCharts

Custom ToolTip add markers on area chart #498