diff --git a/core/modules/filter/filter.module b/core/modules/filter/filter.module
index 0872f6f..c8974e6 100644
--- a/core/modules/filter/filter.module
+++ b/core/modules/filter/filter.module
@@ -9,6 +9,7 @@
 use Drupal\Core\Language\Language;
 use Drupal\Core\Template\Attribute;
 use Drupal\filter\Plugin\Core\Entity\FilterFormat;
+use Drupal\user\UserInterface;
 
 /**
  * Non-HTML markup language filters that generate HTML.
@@ -251,6 +252,10 @@ function filter_formats($account = NULL) {
 
   // Build a list of user-specific formats.
   if (isset($account) && !isset($formats['user'][$account->uid])) {
+    // Ensure we have a proper user object.
+    if (!($account instanceof UserInterface)) {
+      $account = entity_load('user', $account->uid);
+    }
     $formats['user'][$account->uid] = array();
     foreach ($formats['all'] as $format) {
       if ($format->access('view', $account)) {