MauiProgram.cs

using System.Diagnostics;
using Microsoft.Extensions.Logging;
using Microsoft.Maui.Handlers;
using Microsoft.Maui.LifecycleEvents;

namespace InfiniteMeasureLooping;

public static class LoopDetector
{
    public static readonly BindableProperty CurrentCountAttachedProperty = BindableProperty.CreateAttached("CurrentSizeChangedCount", typeof(int), typeof(LoopDetector), 0);
    public static int GetCurrentCount(BindableObject bindable) => (int)bindable.GetValue(CurrentCountAttachedProperty);
    public static void SetCurrentCount(BindableObject bindable, int value) => bindable.SetValue(CurrentCountAttachedProperty, value);
    public static void Increment(BindableObject bindable) => SetCurrentCount(bindable, GetCurrentCount(bindable) + 1);
    
    public static int IncrementLoopCount(this View view)
    {
         Increment(view);
         return GetCurrentCount(view);
    }
}

public static class MauiProgram
{
    public static MauiApp CreateMauiApp()
    {
        var builder = MauiApp.CreateBuilder();
        builder.UseMauiApp<App, MainWindow, RootNavigationPage>()
            .ConfigureFonts(fonts =>
            {
                fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
                fonts.AddFont("OpenSans-SemiBold.ttf", "OpenSansSemiBold");
            });

        var showPopup = true;
        ViewHandler.ViewMapper.AppendToMapping("TheLoopDetector", (handler, _) =>
        {
            if (handler.VirtualView is View view)
            {
                view.SizeChanged += ViewOnSizeChanged;
                view.Unloaded += ViewOnUnloaded;

                void ViewOnUnloaded(object? sender, EventArgs e)
                {
                    view.SizeChanged -= ViewOnSizeChanged;
                    view.Unloaded -= ViewOnUnloaded;
                }
                async void ViewOnSizeChanged(object? sender, EventArgs e)
                {
                    var incrementLoopCount = view.IncrementLoopCount();
                    if (incrementLoopCount <= 1)
                        return;

                    if (incrementLoopCount > 500)
                    {
                        view.HeightRequest = 100;
                        if (showPopup)
                        {
                            showPopup = false;
                            await Application.Current?.Windows[0].Page?.DisplayAlertAsync("Loop Detected", "Current loop counter exceeded limit of 500 size change events setting HeightRequest manually - breaking ui-sizes", "OK");
                            showPopup = true;
                        }
                    }
                    
                    Debug.WriteLine($"{view.GetType().Name} SizeChanged {incrementLoopCount} times", "TheLoopDetector");
                }
            }
        });

#if DEBUG
        builder.Logging.AddDebug();
#endif

        return builder.Build();
    }
}