Subject: [PATCH] BUGFIX core bug https://forge.typo3.org/issues/82528
---
Index: Classes/ContentObject/RestoreRegisterContentObject.php
<+>UTF-8
===================================================================
diff --git a/Classes/ContentObject/RestoreRegisterContentObject.php b/Classes/ContentObject/RestoreRegisterContentObject.php
index 9d50c59..c0cf7d2 100644
--- a/Classes/ContentObject/RestoreRegisterContentObject.php
+++ b/Classes/ContentObject/RestoreRegisterContentObject.php
@@ -30,7 +30,11 @@ class RestoreRegisterContentObject extends AbstractContentObject
     public function render($conf = [])
     {
         $frontendController = $this->getTypoScriptFrontendController();
+        $sysLastChangedValue = $frontendController->register['SYS_LASTCHANGED'] ?? false;
         $frontendController->register = array_pop($frontendController->registerStack) ?? [];
+        if(false !== $sysLastChangedValue){
+            $frontendController->register['SYS_LASTCHANGED'] = $sysLastChangedValue;
+        }
         return '';
     }
 }