Index: html/typo3/sysext/form/Classes/Mvc/Persistence/FormPersistenceManager.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/html/typo3/sysext/form/Classes/Mvc/Persistence/FormPersistenceManager.php b/html/typo3/sysext/form/Classes/Mvc/Persistence/FormPersistenceManager.php
--- a/html/typo3/sysext/form/Classes/Mvc/Persistence/FormPersistenceManager.php	(date 1628097717823)
+++ b/html/typo3/sysext/form/Classes/Mvc/Persistence/FormPersistenceManager.php	(date 1628097717823)
@@ -357,10 +357,10 @@
 
         foreach ($this->getAccessibleFormStorageFolders() as $folder) {
             $storage = $folder->getStorage();
-            $storage->addFileAndFolderNameFilter([
+            $storage->setFileAndFolderNameFilters([[
                 $fileExtensionFilter,
                 'filterFileList'
-            ]);
+            ]]);
 
             $files = $folder->getFiles(
                 0,