diff --git a/core/modules/image/tests/src/FunctionalJavascript/QuickEditImageTest.php b/core/modules/image/tests/src/FunctionalJavascript/QuickEditImageTest.php
index 2b1dd79dbf..dda740d104 100644
--- a/core/modules/image/tests/src/FunctionalJavascript/QuickEditImageTest.php
+++ b/core/modules/image/tests/src/FunctionalJavascript/QuickEditImageTest.php
@@ -34,6 +34,15 @@ class QuickEditImageTest extends QuickEditJavascriptTestBase {
    */
   protected $contentAuthorUser;
 
+  /**
+   * CSS animations must be enabled for PopperJS positioning to work properly.
+   *
+   * @var bool
+   *
+   * @todo revisit in http://drupal.org/node/3082602
+   */
+  protected $disableCssAnimations = FALSE;
+
   /**
    * {@inheritdoc}
    */
diff --git a/core/modules/quickedit/js/views/EntityToolbarView.es6.js b/core/modules/quickedit/js/views/EntityToolbarView.es6.js
index 0243106d47..204a20f5df 100644
--- a/core/modules/quickedit/js/views/EntityToolbarView.es6.js
+++ b/core/modules/quickedit/js/views/EntityToolbarView.es6.js
@@ -322,6 +322,9 @@
                   modifiers: [
                     {
                       name: 'flip',
+                      options: {
+                        boundary: boundariesElement,
+                      },
                     },
                     {
                       name: 'preventOverflow',
diff --git a/core/modules/quickedit/js/views/EntityToolbarView.js b/core/modules/quickedit/js/views/EntityToolbarView.js
index f2a2697f3d..afaf356490 100644
--- a/core/modules/quickedit/js/views/EntityToolbarView.js
+++ b/core/modules/quickedit/js/views/EntityToolbarView.js
@@ -169,7 +169,10 @@
             that.popper = Popper.createPopper(referenceElement, popperElement, {
               placement: "top-".concat(popperedge),
               modifiers: [{
-                name: 'flip'
+                name: 'flip',
+                options: {
+                  boundary: boundariesElement
+                }
               }, {
                 name: 'preventOverflow',
                 options: {
diff --git a/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditFileTest.php b/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditFileTest.php
index f21ba6d7ab..037fa3e27c 100644
--- a/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditFileTest.php
+++ b/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditFileTest.php
@@ -28,6 +28,15 @@ class QuickEditFileTest extends QuickEditJavascriptTestBase {
    */
   protected $defaultTheme = 'stark';
 
+  /**
+   * CSS animations must be enabled for PopperJS positioning to work properly.
+   *
+   * @var bool
+   *
+   * @todo revisit in http://drupal.org/node/3082602
+   */
+  protected $disableCssAnimations = FALSE;
+
   /**
    * {@inheritdoc}
    */
diff --git a/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditIntegrationTest.php b/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditIntegrationTest.php
index 24f36d440e..fc4611e410 100644
--- a/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditIntegrationTest.php
+++ b/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditIntegrationTest.php
@@ -43,6 +43,15 @@ class QuickEditIntegrationTest extends QuickEditJavascriptTestBase {
    */
   protected $contentAuthorUser;
 
+  /**
+   * CSS animations must be enabled for PopperJS positioning to work properly.
+   *
+   * @var bool
+   *
+   * @todo revisit in http://drupal.org/node/3082602
+   */
+  protected $disableCssAnimations = FALSE;
+
   /**
    * {@inheritdoc}
    */
diff --git a/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditLoadingTest.php b/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditLoadingTest.php
index 4f52c00efa..a28504e3c0 100644
--- a/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditLoadingTest.php
+++ b/core/modules/quickedit/tests/src/FunctionalJavascript/QuickEditLoadingTest.php
@@ -67,6 +67,15 @@ class QuickEditLoadingTest extends WebDriverTestBase {
    */
   protected $editorUser;
 
+  /**
+   * CSS animations must be enabled for PopperJS positioning to work properly.
+   *
+   * @var bool
+   *
+   * @todo revisit in http://drupal.org/node/3082602
+   */
+  protected $disableCssAnimations = FALSE;
+
   /**
    * {@inheritdoc}
    */