[macOS] Fixes #5257 (#5262)

diff --git a/Xamarin.Forms.Platform.MacOS/Renderers/NavigationPageRenderer.cs b/Xamarin.Forms.Platform.MacOS/Renderers/NavigationPageRenderer.cs
index 6acbb36..57ddc07 100644 (file)
--- a/Xamarin.Forms.Platform.MacOS/Renderers/NavigationPageRenderer.cs
+++ b/Xamarin.Forms.Platform.MacOS/Renderers/NavigationPageRenderer.cs
@@ -305,15 +305,8 @@ namespace Xamarin.Forms.Platform.MacOS
                        target?.Dispose();
                        if (removeFromStack)
                        {
-                               var newStack = new Stack<NavigationChildPageWrapper>();
-                               foreach (var stack in _currentStack)
-                               {
-                                       if (stack.Page != page)
-                                       {
-                                               newStack.Push(stack);
-                                       }
-                               }
-                               _currentStack = newStack;
+                               var newSource = _currentStack.Reverse().Where(w => w.Page != page);
+                               _currentStack = new Stack<NavigationChildPageWrapper>(newSource);
                        }
                }