Issue #3393300: Delete button not working

src/Form/ListScriptsFormDeleteMultiple.php

@@ -87,6 +87,7 @@ class ListScriptsFormDeleteMultiple extends ConfirmFormBase {
    * {@inheritdoc}
    */
   public function buildForm(array $form, FormStateInterface $form_state) {
+    $form = parent::buildForm($form, $form_state);
     return $form;
   }
 

src/Form/ListscriptsForm.php

@@ -120,6 +120,10 @@ class ListscriptsForm extends FormBase {
       ],
     ];
 
+    $form['actions'] = [
+      '#type' => 'actions',
+    ];
+
     $form['actions']['submit'] = [
       '#type' => 'submit',
       '#value' => $this->t('Apply to selected scripts'),

src/Form/ScriptsFormDelete.php

@@ -82,7 +82,7 @@ class ScriptsFormDelete extends ConfirmFormBase {
    * {@inheritdoc}
    */
   public function buildForm(array $form, FormStateInterface $form_state) {
-
+    $form = parent::buildForm($form, $form_state);
     return $form;
   }