Fetch all lazy properties when entity is already loaded fails

src/NHibernate.Test/Async/FetchLazyProperties/FetchLazyPropertiesFixture.cs

@@ -945,6 +945,26 @@ public async Task TestFetchAfterEntityIsInitializedAsync(bool readOnly)
 			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Formula"), Is.True);
 		}
 
+		[TestCase(true)]
+		[TestCase(false)]
+		public async Task TestFetchAllPropertiesAfterEntityIsInitializedAsync(bool readOnly)
+		{
+			Person person;
+			using(var s = OpenSession())
+			using(var tx = s.BeginTransaction())
+			{
+				person = await (s.CreateQuery("from Person where Id = 1").SetReadOnly(readOnly).UniqueResultAsync<Person>());
+				var image = person.Image;
+				person = await (s.CreateQuery("from Person fetch all properties where Id = 1").SetReadOnly(readOnly).UniqueResultAsync<Person>());
+
+				await (tx.CommitAsync());
+			}
+
+			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Image"), Is.True);
+			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Address"), Is.True);
+			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Formula"), Is.True);
+		}
+
 		[Test]
 		public async Task TestHqlCrossJoinFetchFormulaAsync()
 		{

src/NHibernate.Test/FetchLazyProperties/FetchLazyPropertiesFixture.cs

@@ -934,6 +934,26 @@ public void TestFetchAfterEntityIsInitialized(bool readOnly)
 			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Formula"), Is.True);
 		}
 
+		[TestCase(true)]
+		[TestCase(false)]
+		public void TestFetchAllPropertiesAfterEntityIsInitialized(bool readOnly)
+		{
+			Person person;
+			using(var s = OpenSession())
+			using(var tx = s.BeginTransaction())
+			{
+				person = s.CreateQuery("from Person where Id = 1").SetReadOnly(readOnly).UniqueResult<Person>();
+				var image = person.Image;
+				person = s.CreateQuery("from Person fetch all properties where Id = 1").SetReadOnly(readOnly).UniqueResult<Person>();
+
+				tx.Commit();
+			}
+
+			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Image"), Is.True);
+			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Address"), Is.True);
+			Assert.That(NHibernateUtil.IsPropertyInitialized(person, "Formula"), Is.True);
+		}
+
 		[Test]
 		public void TestHqlCrossJoinFetchFormula()
 		{

src/NHibernate/Async/Persister/Entity/AbstractEntityPersister.cs

@@ -87,7 +87,12 @@ async Task InternalInitializeLazyPropertiesAsync()
 				int[] lazyIndexes;
 				if (allLazyProperties)
 				{
-					lazyIndexes = indexes = lazyPropertyNumbers;
+					indexes = lazyPropertyNumbers;
+					lazyIndexes = new int[lazyPropertyNumbers.Length];
+					for(var i = 0; i < lazyIndexes.Length; i++)
+					{
+						lazyIndexes[i] = i;
+					}
 				}
 				else
 				{

src/NHibernate/Persister/Entity/AbstractEntityPersister.cs

@@ -1413,7 +1413,12 @@ public void InitializeLazyProperties(
 			int[] lazyIndexes;
 			if (allLazyProperties)
 			{
-				lazyIndexes = indexes = lazyPropertyNumbers;
+				indexes = lazyPropertyNumbers;
+				lazyIndexes = new int[lazyPropertyNumbers.Length];
+				for(var i = 0; i < lazyIndexes.Length; i++)
+				{
+					lazyIndexes[i] = i;
+				}
 			}
 			else
 			{