(Try to) add a reproducer for #10869

tests/Doctrine/Tests/ORM/Functional/Ticket/GH10869Test.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Event\PostPersistEventArgs;
+use Doctrine\ORM\Events;
+use Doctrine\Tests\Models\CMS\CmsUser;
+use Doctrine\Tests\OrmFunctionalTestCase;
+
+use function sprintf;
+
+class GH10869Test extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        $this->useModelSet('cms');
+
+        parent::setUp();
+    }
+
+    public function testPostPersistListenerUpdatingObject(): void
+    {
+        $joe           = new CmsUser();
+        $joe->username = 'joe';
+        $joe->name     = 'Joe';
+        $this->_em->persist($joe);
+
+        $this->_em->getEventManager()->addEventListener(Events::postPersist, new class {
+            public function postPersist(PostPersistEventArgs $args): void
+            {
+                $object = $args->getObject();
+
+                if (! $object instanceof CmsUser) {
+                    return;
+                }
+
+                $objectManager = $args->getObjectManager();
+
+                if ($object->status === null) {
+                    $object->status = sprintf('joe-id=%s', $object->id);
+                    $objectManager->flush();
+                }
+            }
+        });
+
+        $this->_em->flush();
+        $this->_em->clear();
+
+        $joeReloaded = $this->_em->find(CmsUser::class, $joe->id);
+
+        self::assertNotNull($joeReloaded->status);
+        self::assertSame($joe->status, $joeReloaded->status);
+    }
+}