Workaround for Xamarin Forms iOS Shell "Nav Stack consistency error"

ShellCustomRenderer.cs

using System;
using System.Collections.Generic;
using Foundation;
using Xamarin.Forms;
using Xamarin.Forms.Platform.iOS;
using YourAwesomeApp.iOS.Renderers;

[assembly: ExportRenderer(typeof(Shell), typeof(ShellCustomRenderer))]
namespace YourAwesomeApp.iOS.Renderers
{
    [Preserve(AllMembers = true)]
    public class ShellCustomRenderer : ShellRenderer
    {
        private readonly List<ShellSectionRenderer> _shellSectionRenderers = new List<ShellSectionRenderer>();

        protected override IShellSectionRenderer CreateShellSectionRenderer(ShellSection shellSection)
        {
            var renderer = base.CreateShellSectionRenderer(shellSection);
            
            if (renderer is ShellSectionRenderer ssr)
            {
                _shellSectionRenderers.Add(ssr);                
            }           

            return renderer;
        }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();

            foreach(var ssr in _shellSectionRenderers)
            {
                try 
                { 
                    if (ssr?.InteractivePopGestureRecognizer != null)
                    {
                        ssr.InteractivePopGestureRecognizer.Enabled = false;
                    }
                }
                catch (Exception ex)
                {
                    System.Diagnostics.Debug.WriteLine(ex);
                }
            }
            
            _shellSectionRenderers.Clear();
        }
    }
}