diff --git a/core/modules/text/tests/src/FunctionalJavascript/TextIntegrationTest.php b/core/modules/text/tests/src/FunctionalJavascript/TextIntegrationTest.php
new file mode 100644
index 0000000..d5c3b00
--- /dev/null
+++ b/core/modules/text/tests/src/FunctionalJavascript/TextIntegrationTest.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace Drupal\Tests\text\FunctionalJavascript;
+
+use Drupal\FunctionalJavascriptTests\JavascriptTestBase;
+
+/**
+ * Tests the JavaScript functionality of the text.
+ *
+ * @group text
+ */
+class TextIntegrationTest extends JavascriptTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['text', 'node'];
+
+  /**
+   * Tests if the Edit summary link is displayed when the field has Help text.
+   */
+  public function testSummaryLinkWhenHelpText() {
+    $admin_user = $this->drupalCreateUser([
+      'access content',
+      'administer site configuration',
+      'access content overview',
+    ]);
+    $this->drupalLogin($admin_user);
+
+    // Create a Content type and two test nodes.
+    $this->createContentType(['type' => 'page']);
+
+    // Log in a user who can create 'page' nodes.
+    $user = $this->drupalCreateUser(['create page content']);
+    $this->drupalLogin($user);
+
+    // Go to "Page" node creation page.
+    $this->drupalGet('node/add/page');
+
+    // Assert Edit summary link presence.
+    $this->assertSession()->responseContains('<span class="field-edit-link"> (<button type="button" class="link link-edit-summary">Edit summary</button>)</span>');
+
+    // Add help text to Basic Page's Body field.
+    $edit['title[0][value]'] = $this->randomMachineName(8);
+    $edit['body[0][value]'] = $this->randomMachineName(16);
+    // Stay on the current page, without reloading.
+    $this->drupalPostForm(NULL, $edit, t('Save'));
+
+    // Assert Edit summary link presence.
+    $this->assertSession()->responseContains('<span class="field-edit-link"> (<button type="button" class="link link-edit-summary">Edit summary</button>)</span>');
+
+  }
+
+}
diff --git a/core/modules/text/text.js b/core/modules/text/text.js
index ad89bd8..86d2128 100644
--- a/core/modules/text/text.js
+++ b/core/modules/text/text.js
@@ -22,38 +22,42 @@
 
         var $summary = $widget.find('.js-text-summary-wrapper');
         var $summaryLabel = $summary.find('label').eq(0);
-        var $full = $widget.find('.js-text-full').closest('.js-form-item');
-        var $fullLabel = $full.find('label').eq(0);
+        var $full = $widget.find('textarea.js-text-full').closest('.js-form-item');
 
-        // Create a placeholder label when the field cardinality is greater
-        // than 1.
-        if ($fullLabel.length === 0) {
-          $fullLabel = $('<label></label>').prependTo($full);
-        }
+        function setUpEditSummaryButton() {
+          var $fullLabel = $(this).find('label').eq(0);
 
-        // Set up the edit/hide summary link.
-        var $link = $('<span class="field-edit-link"> (<button type="button" class="link link-edit-summary">' + Drupal.t('Hide summary') + '</button>)</span>');
-        var $button = $link.find('button');
-        var toggleClick = true;
-        $link.on('click', function (e) {
-          if (toggleClick) {
-            $summary.hide();
-            $button.html(Drupal.t('Edit summary'));
-            $link.appendTo($fullLabel);
-          }
-          else {
-            $summary.show();
-            $button.html(Drupal.t('Hide summary'));
-            $link.appendTo($summaryLabel);
+          // Create a placeholder label when the field cardinality is greater
+          // than 1.
+          if ($fullLabel.length === 0) {
+            $fullLabel = $('<label></label>').prependTo($full);
           }
-          e.preventDefault();
-          toggleClick = !toggleClick;
-        }).appendTo($summaryLabel);
 
-        // If no summary is set, hide the summary field.
-        if ($widget.find('.js-text-summary').val() === '') {
-          $link.trigger('click');
+          // Set up the edit/hide summary link.
+          var $link = $('<span class="field-edit-link"> (<button type="button" class="link link-edit-summary">' + Drupal.t('Hide summary') + '</button>)</span>');
+          var $button = $link.find('button');
+          var toggleClick = true;
+          $link.on('click', function (e) {
+            if (toggleClick) {
+              $summary.hide();
+              $button.html(Drupal.t('Edit summary'));
+              $link.appendTo($fullLabel);
+            }
+            else {
+              $summary.show();
+              $button.html(Drupal.t('Hide summary'));
+              $link.appendTo($summaryLabel);
+            }
+            e.preventDefault();
+            toggleClick = !toggleClick;
+          }).appendTo($summaryLabel);
+
+          // If no summary is set, hide the summary field.
+          if ($widget.find('.js-text-summary').val() === '') {
+            $link.trigger('click');
+          }
         }
+        $full.each(setUpEditSummaryButton);
       });
     }
   };