Issue #2810057 by arijits.drush, Lendude: WSOD after renaming and deleting a views display

core/modules/views_ui/src/Tests/DisplayCRUDTest.php

@@ -81,6 +81,16 @@ public function testRemoveDisplay() {
     $this->drupalPostForm(NULL, array(), t('Save'));
 
     $this->assertNoLinkByHref($path_prefix . '/page_1', 'Make sure there is no display tab for the deleted display.');
+
+    // Test deleting a display that has a modified machine name.
+    $view = $this->randomView();
+    $machine_name = 'new_machine_name';
+    $path_prefix = 'admin/structure/views/view/' . $view['id'] . '/edit';
+    $this->drupalPostForm("admin/structure/views/nojs/display/{$view['id']}/page_1/display_id", array('display_id' => $machine_name), 'Apply');
+    $this->drupalPostForm(NULL, array(), 'Delete Page');
+    $this->drupalPostForm(NULL, array(), t('Save'));
+    $this->assertResponse(200);
+    $this->assertNoLinkByHref($path_prefix . '/new_machine_name', 'Make sure there is no display tab for the deleted display.');
   }
 
   /**

core/modules/views_ui/src/ViewEditForm.php

@@ -266,7 +266,7 @@ public function save(array $form, FormStateInterface $form_state) {
 
     // Rename display ids if needed.
     foreach ($executable->displayHandlers as $id => $display) {
-      if (!empty($display->display['new_id'])) {
+      if (!empty($display->display['new_id']) && empty($display->display['deleted'])) {
         $new_id = $display->display['new_id'];
         $display->display['id'] = $new_id;
         unset($display->display['new_id']);