Issue #3136459 by ranjith_kumar_k_u, dishabhadra, Gauravvvv, priyanka.sahni,...

Issue #3136459 by ranjith_kumar_k_u, dishabhadra, Gauravvvv, priyanka.sahni, smustgrave, sheldonreed3: Filter tips disappear when changing of text format is cancelled

(cherry picked from commit 44cc4df7)

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5AllowedTagsTest.php

@@ -454,6 +454,13 @@ public function testFullHtml() {
 
     // Change the node's text format to Full HTML.
     $this->drupalGet('node/1/edit');
+    $filter_tips = $page->find('css', '[data-drupal-format-id="basic_html"]');
+    $this->assertTrue($filter_tips->isVisible());
+    $page->selectFieldOption('body[0][format]', 'full_html');
+    $this->assertNotEmpty($assert_session->waitForText('Change text format?'));
+    // Check the visibility of "Filter tips" by clicking the "Cancel" button.
+    $page->pressButton('Cancel');
+    $this->assertTrue($filter_tips->isVisible());
     $page->selectFieldOption('body[0][format]', 'full_html');
     $this->assertNotEmpty($assert_session->waitForText('Change text format?'));
     $page->pressButton('Continue');

core/modules/editor/js/editor.js

@@ -157,6 +157,8 @@
               // change event is only triggered after the change has already
               // been accepted.
               select.value = activeFormatID;
+              const eventChange = new Event('change');
+              select.dispatchEvent(eventChange);
               confirmationDialog.close();
             },
           },