Issue #1793992 by dawehner | smiletrl: Fixed Add new displays will change the default displays?.

lib/Drupal/views/Tests/UI/DisplayTest.php

@@ -73,16 +73,23 @@ public function testRemoveDisplay() {
    * Tests adding a display.
    */
   public function testAddDisplay() {
+    // Show the master display.
+    config('views.settings')->set('ui.show.master_display', TRUE)->save();
+
     $settings['page[create]'] = FALSE;
     $view = $this->randomView($settings);
 
     $path_prefix = 'admin/structure/views/view/' . $view['name'] .'/edit';
     $this->drupalGet($path_prefix);
+    $this->drupalPost(NULL, array(), t('Save'));
 
     // Add a new display.
     $this->drupalPost(NULL, array(), 'Add Page');
     // @todo Revising this after http://drupal.org/node/1793700 got in.
     $this->assertLinkByHref($path_prefix . '/page_1', 0, 'Make sure after adding a display the new display appears in the UI');
+
+    $this->assertNoLink('Master*', 0, 'Make sure the master display is not marked as changed.');
+    $this->assertLink('Page*', 0, 'Make sure the added display is marked as changed.');
   }
 
   /**

lib/Drupal/views/ViewUI.php

@@ -789,6 +789,9 @@ public function submitDisplayAdd($form, &$form_state) {
     $parents = $form_state['triggering_element']['#parents'];
     $display_type = array_pop($parents);
     $display_id = $this->storage->addDisplay($display_type);
+    // A new display got added so the asterisks symbol should appear on the new
+    // display.
+    $this->current_display = $display_id;
     views_ui_cache_set($this);
 
     // Redirect to the new display's edit page.