diff --git a/core/lib/Drupal/Core/Entity/EntityBCDecorator.php b/core/lib/Drupal/Core/Entity/EntityBCDecorator.php
index e194001..7bee5d3 100644
--- a/core/lib/Drupal/Core/Entity/EntityBCDecorator.php
+++ b/core/lib/Drupal/Core/Entity/EntityBCDecorator.php
@@ -182,7 +182,20 @@ public function __set($name, $value) {
    */
   public function __isset($name) {
     $value = $this->__get($name);
-    return isset($value);
+    // Horrible code but necessary because non existing properties are
+    // initialized with the value NULL.
+    if (($isset = isset($value)) && is_array($value)) {
+      $isset = FALSE;
+      foreach ($value as $langcode => $data) {
+        foreach ($data as $delta => $value) {
+          if (!is_null($value)) {
+            $isset = TRUE;
+            break(2);
+          }
+        }
+      }
+    }
+    return $isset;
   }
 
   /**
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 1e42dcd..7884886 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -2643,7 +2643,7 @@ function node_access($op, $node, $account = NULL, $langcode = NULL) {
   }
 
   // Check if authors can view their own unpublished nodes.
-  if ($op == 'view' && !$node->get('status', $langcode) && user_access('view own unpublished content', $account) && $account->uid == $node->get('uid', $langcode) && $account->uid != 0) {
+  if ($op == 'view' && empty($node->get('status', $langcode)->value) && user_access('view own unpublished content', $account) && $account->uid == $node->get('uid', $langcode)->value && $account->uid != 0) {
     $rights[$account->uid][$cid][$langcode][$op] = TRUE;
     return TRUE;
   }
@@ -2680,7 +2680,7 @@ function node_access($op, $node, $account = NULL, $langcode = NULL) {
       $rights[$account->uid][$cid][$langcode][$op] = $result;
       return $result;
     }
-    elseif (is_object($node) && $op == 'view' && $node->get('status', $langcode)) {
+    elseif (is_object($node) && $op == 'view' && !empty($node->get('status', $langcode)->value)) {
       // If no modules implement hook_node_grants(), the default behavior is to
       // allow all users to view published nodes, so reflect that here.
       $rights[$account->uid][$cid][$langcode][$op] = TRUE;
diff --git a/core/modules/taxonomy/taxonomy.module b/core/modules/taxonomy/taxonomy.module
index b4a512a..33f140d 100644
--- a/core/modules/taxonomy/taxonomy.module
+++ b/core/modules/taxonomy/taxonomy.module
@@ -1464,7 +1464,7 @@ function taxonomy_node_predelete(EntityInterface $node) {
 /**
  * Deletes taxonomy index entries for a given node.
  *
- * @param Drupal\node\Plugin\Core\Entity\Node $node
+ * @param \Drupal\Core\Entity\EntityInterface $node
  *   The node entity.
  */
 function taxonomy_delete_node_index(EntityInterface $node) {