André Bonon
--- a/core/lib/Drupal/Core/Entity/EntityViewBuilder.php
+++ b/core/lib/Drupal/Core/Entity/EntityViewBuilder.php
+    // If entity is new and has no ID, generate unique ID from entity object.
+    // This is to prevent false positives, for example when previewing a new
+    // node that is referencing a new node without either node yet being saved.
+    if ($entity->id()) {
+      $entity_id = $entity->id();
+    }
+    else {
+      $entity_id = spl_object_id($entity);
+    }
+    // It seems very unlikely that the same entity displayed in the same view
+    // mode would be recursively nested and meant to be displayed differently,
+    // so a key made up of the entity type ID, entity ID, and view mode should
+    // suffice for recursion detection
+    return $entity->getEntityTypeId()
+      . $entity_id
+      . $build['#view_mode'];
-    return $entity->getEntityTypeId()
-      . $entity_id
-      . $build['#view_mode'];
+    return implode(':', [
+      $entity->getEntityTypeId(),
+      $entity_id,
+      $build['#view_mode'],
+    ]);