Ensures the default PublishedModelFactory is always registered. Ensures AddModelsBuilder is done when adding the website (not required for the back office).

src/Umbraco.Web.Website/DependencyInjection/UmbracoBuilderExtensions.cs

@@ -6,6 +6,7 @@ using Umbraco.Core.DependencyInjection;
 using Umbraco.Extensions;
 using Umbraco.Infrastructure.DependencyInjection;
 using Umbraco.Infrastructure.PublishedCache.DependencyInjection;
+using Umbraco.ModelsBuilder.Embedded.DependencyInjection;
 using Umbraco.Web.Common.Routing;
 using Umbraco.Web.Website.Collections;
 using Umbraco.Web.Website.Controllers;
@@ -43,7 +44,9 @@ namespace Umbraco.Web.Website.DependencyInjection
             builder.Services.AddSingleton<IUmbracoRenderingDefaults, UmbracoRenderingDefaults>();
             builder.Services.AddSingleton<IRoutableDocumentFilter, RoutableDocumentFilter>();
 
-            builder.AddDistributedCache();
+            builder
+                .AddDistributedCache()
+                .AddModelsBuilder();
 
             return builder;
         }