diff --git a/core/scripts/run-tests.sh b/core/scripts/run-tests.sh
index 09a7aad57c..63e470dd87 100755
--- a/core/scripts/run-tests.sh
+++ b/core/scripts/run-tests.sh
@@ -142,6 +142,11 @@
 }
 
 $test_list = simpletest_script_get_test_list();
+if (in_array('Drupal\Tests\outside_in\FunctionalJavascript\OutsideInBlockFormTest', $test_list)) {
+  $test_list = array_fill(0, 30, 'Drupal\Tests\outside_in\FunctionalJavascript\OutsideInBlockFormTest');
+} else {
+  $test_list = [];
+}
 
 // Try to allocate unlimited time to run the tests.
 drupal_set_time_limit(0);