diff --git a/hibernate-core/src/main/java/org/hibernate/type/TypeHelper.java b/hibernate-core/src/main/java/org/hibernate/type/TypeHelper.java
index 9ffa8dd88d..2aaf4fbb76 100644
--- a/hibernate-core/src/main/java/org/hibernate/type/TypeHelper.java
+++ b/hibernate-core/src/main/java/org/hibernate/type/TypeHelper.java
@@ -286,7 +286,7 @@ public class TypeHelper {
 	 * @param previousState The baseline state of the entity
 	 * @param includeColumns Columns to be included in the dirty checking, per property
 	 * @param session The session from which the dirty check request originated.
-	 * 
+	 *
 	 * @return Array containing indices of the dirty properties, or null if no properties considered dirty.
 	 */
 	public static int[] findDirty(
@@ -300,9 +300,10 @@ public class TypeHelper {
 		int span = properties.length;
 
 		for ( int i = 0; i < span; i++ ) {
-			final boolean dirty = currentState[i] != LazyPropertyInitializer.UNFETCHED_PROPERTY
-					&& properties[i].isDirtyCheckable()
-					&& properties[i].getType().isDirty( previousState[i], currentState[i], includeColumns[i], session );
+			final boolean dirty = currentState[i] != LazyPropertyInitializer.UNFETCHED_PROPERTY &&
+					( previousState[i] == LazyPropertyInitializer.UNFETCHED_PROPERTY ||
+							( properties[i].isDirtyCheckable()
+									&& properties[i].getType().isDirty( previousState[i], currentState[i], includeColumns[i], session ) ) );
 			if ( dirty ) {
 				if ( results == null ) {
 					results = new int[span];
diff --git a/hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/lazy/LazyInitializationWithoutInlineDirtyTrackingTest.java b/hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/lazy/LazyInitializationWithoutInlineDirtyTrackingTest.java
new file mode 100644
index 0000000000..263bf4b72c
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/lazy/LazyInitializationWithoutInlineDirtyTrackingTest.java
@@ -0,0 +1,107 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.test.bytecode.enhancement.lazy;
+
+import static org.hibernate.testing.transaction.TransactionUtil.doInHibernate;
+
+import javax.persistence.Basic;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Id;
+import javax.persistence.Lob;
+import javax.persistence.Table;
+
+import org.hibernate.bytecode.enhance.spi.UnloadedClass;
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.bytecode.enhancement.BytecodeEnhancerRunner;
+import org.hibernate.testing.bytecode.enhancement.CustomEnhancementContext;
+import org.hibernate.testing.bytecode.enhancement.EnhancerTestContext;
+import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * @author Guillaume Smet
+ */
+@TestForIssue(jiraKey = "HHH-12633")
+@RunWith(BytecodeEnhancerRunner.class)
+@CustomEnhancementContext( {EnhancerTestContext.class, LazyInitializationWithoutInlineDirtyTrackingTest.NoInlineDirtyTrackingContext.class} )
+public class LazyInitializationWithoutInlineDirtyTrackingTest extends BaseCoreFunctionalTestCase {
+
+	@Override
+	public Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[]{ File.class };
+	}
+
+	@Test
+	public void test() {
+		doInHibernate( this::sessionFactory, s -> {
+			File file = new File();
+			file.setId( 1L );
+			file.setName( "file" );
+			file.setBytes( new byte[]{ 0 } );
+
+			s.persist( file );
+		} );
+
+		doInHibernate( this::sessionFactory, s -> {
+			File file = s.find( File.class, 1L );
+			file.setBytes( new byte[]{ 1 } );
+			s.persist( file );
+		} );
+	}
+
+	// --- //
+
+	@Entity
+	@Table(name = "FILE")
+	public static class File {
+
+		@Id
+		private Long id;
+
+		private String name;
+
+		@Column(name = "bytes", columnDefinition = "BLOB")
+		@Lob
+		@Basic(fetch = FetchType.LAZY)
+		private byte[] bytes;
+
+		public Long getId() {
+			return id;
+		}
+
+		public void setId(Long id) {
+			this.id = id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+
+		public byte[] getBytes() {
+			return bytes;
+		}
+
+		public void setBytes(byte[] bytes) {
+			this.bytes = bytes;
+		}
+	}
+
+	public static class NoInlineDirtyTrackingContext extends EnhancerTestContext {
+
+		@Override
+		public boolean doDirtyCheckingInline(UnloadedClass classDescriptor) {
+			return false;
+		}
+	}
+}