Default state.

src/Squidex.Infrastructure/Orleans/GrainOfGuid{T}.cs

@@ -18,7 +18,7 @@ namespace Squidex.Infrastructure.Orleans
         private readonly IStore<Guid> store;
         private IPersistence<T> persistence;
 
-        protected T State { get; set; }
+        protected T State { get; set; } = new T();
 
         public Guid Key { get; private set; }
 

src/Squidex.Infrastructure/Orleans/GrainOfString{T}.cs

@@ -19,7 +19,7 @@ namespace Squidex.Infrastructure.Orleans
 
         public string Key { get; set; }
 
-        protected T State { get; set; }
+        protected T State { get; set; } = new T();
 
         protected IPersistence<T> Persistence
         {