diff -u b/core/modules/layout_builder/tests/src/FunctionalJavascript/InlineBlockTest.php b/core/modules/layout_builder/tests/src/FunctionalJavascript/InlineBlockTest.php
--- b/core/modules/layout_builder/tests/src/FunctionalJavascript/InlineBlockTest.php
+++ b/core/modules/layout_builder/tests/src/FunctionalJavascript/InlineBlockTest.php
@@ -20,7 +20,7 @@
   /**
    * {@inheritdoc}
    */
-  protected static $modules = [
+  public static $modules = [
     'dblog',
   ];