diff --git a/acceptance/WcmsTestsCkeditorButtonsCest.php b/acceptance/WcmsTestsCkeditorButtonsCest.php
index 494dc05a513a60d5c7ec3ea17edc41df87b46d0e..75a3f59cb2c56fbb44eb4708261c09dda7ac37f7 100644
--- a/acceptance/WcmsTestsCkeditorButtonsCest.php
+++ b/acceptance/WcmsTestsCkeditorButtonsCest.php
@@ -116,6 +116,9 @@ class WcmsTestsCkeditorButtonsCest {
       $i->click('Copy text');
       $i->waitForText('Configure block');
 
+      // Switch the block form iframe.
+      $i->switchToIFrame('iframe[class="lbim-dialog-iframe"]');
+
       // Adds tags to text and xpath selector.
       $tagged_text = '<span dir="ltr" lang="' . $code . '">' . $language . '</span>';
 
@@ -126,8 +129,13 @@ class WcmsTestsCkeditorButtonsCest {
       $i->click('Source');
       $i->fillCkEditor($tagged_text, 'textarea[name="settings[block_form][field_uw_copy_text][0][value]"]');
 
-      // Submit form.
+      // Trigger CKEditor update.
+      $i->executeJS('for (instance in CKEDITOR.instances) { CKEDITOR.instances[instance].updateElement(); }');
+
+      // Click the submit button.
+      $i->waitForElementClickable('input[id*="edit-actions-submit"]');
       $i->click('input[id*="edit-actions-submit"]');
+      $i->switchToIFrame();
 
       // Ensure that the tag is on the page.
       $i->waitForElement(Locator::contains('span[lang="' . $code . '"]', $language));