diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/PluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/PluginBase.php
index 285f53a..2d9a0e4 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/PluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/PluginBase.php
@@ -241,7 +241,8 @@ public function summaryTitle() {
    * This appears on the ui beside each plugin and beside the settings link.
    */
   public function pluginTitle() {
-    if (isset($this->definition['short_title'])) {
+    // Short_title is optional so its defaults to an empty string.
+    if (!empty($this->definition['short_title'])) {
       return check_plain($this->definition['short_title']);
     }
     return check_plain($this->definition['title']);