diff --git a/typo3/sysext/backend/Classes/View/BackendLayout/ContentFetcher.php b/typo3/sysext/backend/Classes/View/BackendLayout/ContentFetcher.php
index de78b4795f227d13605cbc0cdd9ffbe896cac7aa..f6c4d236e1890ab76ba210b3251e377506e0630e 100644
--- a/typo3/sysext/backend/Classes/View/BackendLayout/ContentFetcher.php
+++ b/typo3/sysext/backend/Classes/View/BackendLayout/ContentFetcher.php
@@ -111,7 +111,7 @@ class ContentFetcher
         $rememberer = $this->backendLayout->getRecordRememberer();
         foreach ($this->fetchedContentRecords[$this->backendLayout->getDrawingConfiguration()->getLanguageColumnsPointer()] ?? [] as $contentRecordsInColumn) {
             foreach ($contentRecordsInColumn as $contentRecord) {
-                if (!$rememberer->isRemembered($contentRecord['uid']) && !in_array($contentRecord['colPos'], $knownColumnPositionNumbers)) {
+                if (!$rememberer->isRemembered((int)$contentRecord['uid']) && !in_array($contentRecord['colPos'], $knownColumnPositionNumbers)) {
                     $unrendered[] = $contentRecord;
                 }
             }
diff --git a/typo3/sysext/backend/Classes/View/BackendLayout/Grid/GridColumnItem.php b/typo3/sysext/backend/Classes/View/BackendLayout/Grid/GridColumnItem.php
index 024ee7780a116b71c8cf0d6138b01cf4c7a37692..2358f21441efad10b2296460fc0423efdc2bcae9 100644
--- a/typo3/sysext/backend/Classes/View/BackendLayout/Grid/GridColumnItem.php
+++ b/typo3/sysext/backend/Classes/View/BackendLayout/Grid/GridColumnItem.php
@@ -49,8 +49,8 @@ class GridColumnItem extends AbstractGridObject
         parent::__construct($backendLayout);
         $this->column = $column;
         $this->record = $record;
-        $backendLayout->getRecordRememberer()->rememberRecordUid($record['uid']);
-        $backendLayout->getRecordRememberer()->rememberRecordUid($record['l18n_parent']);
+        $backendLayout->getRecordRememberer()->rememberRecordUid((int)$record['uid']);
+        $backendLayout->getRecordRememberer()->rememberRecordUid((int)$record['l18n_parent']);
     }
 
     public function isVersioned(): bool