diff -u b/tests/src/FunctionalJavascript/LayoutBuilderDisplayVariantTest.php b/tests/src/FunctionalJavascript/LayoutBuilderDisplayVariantTest.php
--- b/tests/src/FunctionalJavascript/LayoutBuilderDisplayVariantTest.php
+++ b/tests/src/FunctionalJavascript/LayoutBuilderDisplayVariantTest.php
@@ -106,9 +106,9 @@
 
     // Check if block is rendered in the correct region.
     $this->drupalGet('example');
-    $assert_session->waitForElement('css', '.layout__region--first');
+    $assert_session->waitForElementVisible('css', '.layout__region--first');
     $assert_session->elementTextContains('css', '.layout__region--first', 'Powered by Drupal');
-    $assert_session->waitForElement('css', '.layout__region--second');
+    $assert_session->waitForElementVisible('css', '.layout__region--second');
     $assert_session->elementTextContains('css', '.layout__region--second', 'User account menu');
   }