This is a draft of uneffective UseStatusCodePagesWithReExecute, cc @javiercn.

Author: ilonatommy

src/Components/Endpoints/src/RazorComponentEndpointInvoker.cs

@@ -39,11 +39,12 @@ private async Task RenderComponentCore(HttpContext context)
     {
         context.Response.ContentType = RazorComponentResultExecutor.DefaultContentType;
         var isErrorHandler = context.Features.Get<IExceptionHandlerFeature>() is not null;
+        var hasStatusCodePage = context.Features.Get<IStatusCodePagesFeature>() is not null;
         if (isErrorHandler)
         {
             Log.InteractivityDisabledForErrorHandling(_logger);
         }
-        _renderer.InitializeStreamingRenderingFraming(context, isErrorHandler);
+        _renderer.InitializeStreamingRenderingFraming(context, isErrorHandler, hasStatusCodePage);
         EndpointHtmlRenderer.MarkAsAllowingEnhancedNavigation(context);
 
         var endpoint = context.GetEndpoint() ?? throw new InvalidOperationException($"An endpoint must be set on the '{nameof(HttpContext)}'.");

src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Prerendering.cs

@@ -18,7 +18,7 @@ internal partial class EndpointHtmlRenderer
 
     protected override IComponent ResolveComponentForRenderMode([DynamicallyAccessedMembers(Component)] Type componentType, int? parentComponentId, IComponentActivator componentActivator, IComponentRenderMode renderMode)
     {
-        if (_isHandlingErrors)
+        if (_isHandlingErrors || _hasStatusCodePage)
         {
             // Ignore the render mode boundary in error scenarios.
             return componentActivator.CreateInstance(componentType);

src/Components/Endpoints/src/Rendering/EndpointHtmlRenderer.Streaming.cs

@@ -22,10 +22,12 @@ internal partial class EndpointHtmlRenderer
     private HashSet<int>? _visitedComponentIdsInCurrentStreamingBatch;
     private string? _ssrFramingCommentMarkup;
     private bool _isHandlingErrors;
+    private bool _hasStatusCodePage;
 
-    public void InitializeStreamingRenderingFraming(HttpContext httpContext, bool isErrorHandler)
+    public void InitializeStreamingRenderingFraming(HttpContext httpContext, bool isErrorHandler, bool hasStatusCodePage)
     {
         _isHandlingErrors = isErrorHandler;
+        _hasStatusCodePage = hasStatusCodePage;
         if (IsProgressivelyEnhancedNavigation(httpContext.Request))
         {
             var id = Guid.NewGuid().ToString();

src/Components/Endpoints/src/Results/RazorComponentResultExecutor.cs

@@ -48,7 +48,8 @@ private static Task RenderComponentToResponse(
         return endpointHtmlRenderer.Dispatcher.InvokeAsync(async () =>
         {
             var isErrorHandler = httpContext.Features.Get<IExceptionHandlerFeature>() is not null;
-            endpointHtmlRenderer.InitializeStreamingRenderingFraming(httpContext, isErrorHandler);
+            var hasStatusCodePage = httpContext.Features.Get<IStatusCodePagesFeature>() is not null;
+            endpointHtmlRenderer.InitializeStreamingRenderingFraming(httpContext, isErrorHandler, hasStatusCodePage);
             EndpointHtmlRenderer.MarkAsAllowingEnhancedNavigation(httpContext);
 
             // We could pool these dictionary instances if we wanted, and possibly even the ParameterView