diff --git a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
index daf3d1f..87f0bb8 100644
--- a/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
+++ b/core/modules/outside_in/tests/src/FunctionalJavascript/OutsideInBlockFormTest.php
@@ -137,7 +137,7 @@ public function testBlocks($block_plugin, $new_page_text, $element_selector, $la
       // Simulate press the Escape key.
       $this->getSession()->executeScript('jQuery("body").trigger(jQuery.Event("keyup", { keyCode: 27 }));');
       $this->waitForOffCanvasToClose();
-      $this->getSession()->wait(100);
+      $this->getSession()->wait(1);
       $this->assertEditModeDisabled();
       $web_assert->elementTextContains('css', '#drupal-live-announce', 'Exited edit mode.');
       $web_assert->elementTextNotContains('css', '.contextual-toolbar-tab button', 'Editing');
diff --git a/core/scripts/run-tests.sh b/core/scripts/run-tests.sh
index 09a7aad..437746e 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, 200, 'Drupal\Tests\outside_in\FunctionalJavascript\OutsideInBlockFormTest');
+} else {
+  $test_list = [];
+}
 
 // Try to allocate unlimited time to run the tests.
 drupal_set_time_limit(0);