Fixing CE cache dependency

Closes #3468371

src/Entity/EntityCeDisplay.php

@@ -207,6 +207,21 @@ class EntityCeDisplay extends EntityDisplayBase implements EntityCeDisplayInterf
     ];
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheTagsToInvalidate() {
+    $tags = parent::getCacheTagsToInvalidate();
+    // $tags is a single tag, ending in the view mode. When using the default
+    // display to build a specific view mode, also add a tag for that view mode.
+    $tag = current($tags);
+    if ($this->originalMode !== 'default' && substr($tag, -8) === '.default') {
+      $tags[] = substr($tag, 0, strlen($tag) - 7) . $this->originalMode;
+    }
+
+    return $tags;
+  }
+
   /**
    * {@inheritdoc}
    */