diff --git a/Normalizer/AbstractObjectNormalizer.php b/Normalizer/AbstractObjectNormalizer.php
index 40f9204f..4edbe9c3 100644
--- a/Normalizer/AbstractObjectNormalizer.php
+++ b/Normalizer/AbstractObjectNormalizer.php
@@ -246,16 +246,20 @@ protected function getAttributes(object $object, ?string $format, array $context
             return $this->attributesCache[$key];
         }
 
-        $attributes = $this->extractAttributes($object, $format, $context);
+        $allowedAttributes = $this->getAllowedAttributes($object, $context, true);
 
-        if ($mapping = $this->classDiscriminatorResolver?->getMappingForMappedObject($object)) {
-            array_unshift($attributes, $mapping->getTypeProperty());
+        if (false !== $allowedAttributes) {
+            if ($context['cache_key']) {
+                $this->attributesCache[$key] = $allowedAttributes;
+            }
+
+            return $allowedAttributes;
         }
 
-        $allowedAttributes = $this->getAllowedAttributes($object, $context, true);
+        $attributes = $this->extractAttributes($object, $format, $context);
 
-        if (false !== $allowedAttributes) {
-            $attributes = $attributes ? array_intersect($attributes, $allowedAttributes) : $allowedAttributes;
+        if ($mapping = $this->classDiscriminatorResolver?->getMappingForMappedObject($object)) {
+            array_unshift($attributes, $mapping->getTypeProperty());
         }
 
         if ($context['cache_key'] && \stdClass::class !== $class) {
diff --git a/Tests/Normalizer/AbstractObjectNormalizerTest.php b/Tests/Normalizer/AbstractObjectNormalizerTest.php
index 03ac7f99..16e869ef 100644
--- a/Tests/Normalizer/AbstractObjectNormalizerTest.php
+++ b/Tests/Normalizer/AbstractObjectNormalizerTest.php
@@ -18,7 +18,6 @@
 use Symfony\Component\PropertyInfo\Type;
 use Symfony\Component\Serializer\Attribute\Context;
 use Symfony\Component\Serializer\Attribute\DiscriminatorMap;
-use Symfony\Component\Serializer\Attribute\Ignore;
 use Symfony\Component\Serializer\Attribute\SerializedName;
 use Symfony\Component\Serializer\Attribute\SerializedPath;
 use Symfony\Component\Serializer\Exception\ExtraAttributesException;
@@ -837,14 +836,6 @@ public function testDenormalizeWithCorrectOrderOfAttributeAndProperty()
         $this->assertSame('nested-id', $test->id);
     }
 
-    public function testNormalizeWithIgnoreAttributeAndPrivateProperties()
-    {
-        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
-        $normalizer = new ObjectNormalizer($classMetadataFactory);
-
-        $this->assertSame(['foo' => 'foo'], $normalizer->normalize(new ObjectDummyWithIgnoreAttributeAndPrivateProperty()));
-    }
-
     public function testNormalizeBasedOnAllowedAttributes()
     {
         $normalizer = new class() extends AbstractObjectNormalizer {
@@ -1089,16 +1080,6 @@ class ObjectDummyWithContextAttributeSkipNullValues
     public ?string $propertyWithNullSkipNullValues = null;
 }
 
-class ObjectDummyWithIgnoreAttributeAndPrivateProperty
-{
-    public $foo = 'foo';
-
-    #[Ignore]
-    public $ignored = 'ignored';
-
-    private $private = 'private';
-}
-
 class AbstractObjectNormalizerWithMetadata extends AbstractObjectNormalizer
 {
     public function __construct()
diff --git a/Tests/SerializerTest.php b/Tests/SerializerTest.php
index 88a3a160..67953a4d 100644
--- a/Tests/SerializerTest.php
+++ b/Tests/SerializerTest.php
@@ -469,7 +469,7 @@ public function testDeserializeAndSerializeInterfacedObjectsWithTheClassMetadata
             'groups' => ['two'],
         ]);
 
-        $this->assertEquals('{"type":"one","two":2}', $serialized);
+        $this->assertEquals('{"two":2,"type":"one"}', $serialized);
     }
 
     public function testDeserializeAndSerializeNestedInterfacedObjectsWithTheClassMetadataDiscriminator()