diff --git a/core/lib/Drupal/Core/Entity/ContentEntityBase.php b/core/lib/Drupal/Core/Entity/ContentEntityBase.php
index acd0cdc..afddb22 100644
--- a/core/lib/Drupal/Core/Entity/ContentEntityBase.php
+++ b/core/lib/Drupal/Core/Entity/ContentEntityBase.php
@@ -1096,7 +1096,7 @@ public function __clone() {
     // Ensure that the following properties are actually cloned by
     // overwriting the original references with ones pointing to copies of
     // them: enforceIsNew, newRevision, loadedRevisionId, fields, entityKeys,
-    // translatableEntityKeys and values.
+    // translatableEntityKeys, values and isDefaultRevision.
     $enforce_is_new = $this->enforceIsNew;
     $this->enforceIsNew = &$enforce_is_new;
 
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityCloneTest.php b/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityCloneTest.php
index 665bf4b..0f77535 100644
--- a/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityCloneTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/ContentEntityCloneTest.php
@@ -297,15 +297,19 @@ public function testEntityPropertiesModifications() {
 
     // Retrieve the entity properties.
     $reflection = new \ReflectionClass($entity);
-    $properties = $reflection->getProperties(\ReflectionProperty::IS_PUBLIC | \ReflectionProperty::IS_PROTECTED | \ReflectionProperty::IS_PRIVATE);
+    $properties = $reflection->getProperties(~\ReflectionProperty::IS_STATIC);
     $translation_unique_properties = ['activeLangcode', 'translationInitialize', 'fieldDefinitions', 'languages', 'langcodeKey', 'defaultLangcode', 'defaultLangcodeKey', 'validated', 'validationRequired', 'entityTypeId', 'typedData', 'cacheContexts', 'cacheTags', 'cacheMaxAge', '_serviceIds'];
 
     foreach ($properties as $property) {
       // Modify each entity property on the clone and assert that the change is
       // not propagated to the original entity.
       $property->setAccessible(TRUE);
+      $property->setValue($entity, 'default-value');
+      $property->setValue($translation, 'default-value');
       $property->setValue($clone, 'test-entity-cloning');
-      $this->assertNotEquals($property->getValue($entity), $property->getValue($clone), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+      $this->assertEquals('default-value', $property->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+      $this->assertEquals('default-value', $property->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+      $this->assertEquals('test-entity-cloning', $property->getValue($clone), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
 
       // Modify each entity property on the translation entity object and assert
       // that the change is propagated to the default translation entity object
@@ -320,10 +324,12 @@ public function testEntityPropertiesModifications() {
       // not be able to properly access all properties and this will cause
       // exceptions without a proper backtrace.
       if (in_array($property->getName(), $translation_unique_properties)) {
-        $this->assertFalse($property->getValue($entity) === $property->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+        $this->assertEquals('default-value', $property->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+        $this->assertEquals('test-translation-cloning', $property->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
       }
       else {
-        $this->assertTrue($property->getValue($entity) === $property->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+        $this->assertEquals('test-translation-cloning', $property->getValue($entity), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
+        $this->assertEquals('test-translation-cloning', $property->getValue($translation), (string) new FormattableMarkup('Entity property %property_name is not cloned properly.', ['%property_name' => $property->getName()]));
       }
     }
   }