diff --git a/modules/backend/formwidgets/NestedForm.php b/modules/backend/formwidgets/NestedForm.php
index c4479f5fc4..509a718e7c 100644
--- a/modules/backend/formwidgets/NestedForm.php
+++ b/modules/backend/formwidgets/NestedForm.php
@@ -42,9 +42,6 @@ public function init()
             'usePanelStyles',
         ]);
 
-        if ($this->formField->disabled) {
-            $this->previewMode = true;
-        }
 
         $config = $this->makeConfig($this->form);
         $config->model = $this->model;
@@ -53,6 +50,12 @@ public function init()
         $config->arrayName = $this->getFieldName();
         $config->isNested = true;
 
+        if ($this->formField->disabled) {
+            foreach ($config->fields as &$field) {
+                $field["disabled"] = true;
+            };
+        }
+
         if (object_get($this->getParentForm()->config, 'enableDefaults') === true) {
             $config->enableDefaults = true;
         }