c# – Maui Popup – Message does not fill entire popup area on iOS

I have the following popup window defined:

The Codebehind:

public partial class SimplePopup : Popup
{
    public SimplePopup()
    {
    InitializeComponent();
    }
    public SimplePopup(string message, string messagetype)
    {
        InitializeComponent();
        TheMessage.Text = message;
        if (messagetype == "ERROR")
        {
            TheMessage.BackgroundColor = Colors.Red;
        } else if (messagetype == "INFO")
        {
            TheMessage.BackgroundColor = Colors.Green;
         }
    }
    async void OnOKButtonClicked(object? sender, EventArgs e)
    {
        var cts = new CancellationTokenSource(TimeSpan.FromSeconds(5));
        await CloseAsync(token: cts.Token);
    }
}

The code to execute this popup is:

public async Task DisplayPopup(string message, string messageType)
{
    SimplePopup popup = new(message, messageType)
    {
        CanBeDismissedByTappingOutsideOfPopup = false
    };
    await MainThread.InvokeOnMainThreadAsync(async () =>
    {
        await this.ShowPopupAsync(popup, null);
    });
}

I’ve tried several methods to get the message to fill the entire popup area but thus far nothing works. What am I doing wrong?