diff -u b/core/modules/config/tests/config_import_test/src/EventSubscriber.php b/core/modules/config/tests/config_import_test/src/EventSubscriber.php
--- b/core/modules/config/tests/config_import_test/src/EventSubscriber.php
+++ b/core/modules/config/tests/config_import_test/src/EventSubscriber.php
@@ -87,7 +87,7 @@
    */
   public function onConfigSave(ConfigCrudEvent $event) {
     $config = $event->getConfig();
-    if ($config->getName() == 'action.settings') {
+    if ($config->getName() == 'system.site') {
       $values = $this->state->get('ConfigImportUITest.system.site.weight_select_max', []);
       $values[] = $config->get('weight_select_max');
       $this->state->set('ConfigImportUITest.system.site.weight_select_max', $values);
@@ -119,9 +119,9 @@
    */
   public function onConfigDelete(ConfigCrudEvent $event) {
     $config = $event->getConfig();
-    if ($config->getName() == 'action.settings') {
-      $value = $this->state->get('ConfigImportUITest.action.settings.delete', 0);
-      $this->state->set('ConfigImportUITest.action.settings.delete', $value + 1);
+    if ($config->getName() == 'system.site') {
+      $value = $this->state->get('ConfigImportUITest.system.site.delete', 0);
+      $this->state->set('ConfigImportUITest.system.site.delete', $value + 1);
     }
   }
 
diff -u b/core/modules/config/tests/src/Functional/ConfigImportUITest.php b/core/modules/config/tests/src/Functional/ConfigImportUITest.php
--- b/core/modules/config/tests/src/Functional/ConfigImportUITest.php
+++ b/core/modules/config/tests/src/Functional/ConfigImportUITest.php
@@ -114,7 +114,6 @@
     $this->assertRaw('<td>' . $dynamic_name);
     $this->assertRaw('<td>core.extension');
     $this->assertRaw('<td>system.theme');
-    $this->assertRaw('<td>action.settings');
     $this->assertFieldById('edit-submit', t('Import all'));
 
     // Import and verify that both do not appear anymore.
@@ -123,7 +122,6 @@
     $this->assertNoRaw('<td>' . $dynamic_name);
     $this->assertNoRaw('<td>core.extension');
     $this->assertNoRaw('<td>system.theme');
-    $this->assertNoRaw('<td>action.settings');
 
     $this->assertNoFieldById('edit-submit', t('Import all'));
 
@@ -157,12 +155,12 @@
     $this->assertIdentical($expected, $installed, 'Action, Ban, Text and Options modules installed in the correct order.');
     $this->assertTrue(empty($uninstalled), 'No modules uninstalled during import');
 
-    // Verify that the action.settings configuration object was only written
+    // Verify that the system.site configuration object was only written
     // once during the import process and only with the value set in the staged
     // configuration. This verifies that the module's default configuration is
     // used during configuration import and, additionally, that after installing
     // a module, that configuration is not synced twice.
-    $recursion_limit_values = \Drupal::state()->get('ConfigImportUITest.action.settings.recursion_limit', []);
+    $recursion_limit_values = \Drupal::state()->get('ConfigImportUITest.system.site.weight_select_max', []);
     $this->assertIdentical($recursion_limit_values, [50]);
 
     $core_extension = $this->config('core.extension')->get();
@@ -172,7 +170,6 @@
     unset($core_extension['module']['text']);
     unset($core_extension['theme']['bartik']);
     $sync->write('core.extension', $core_extension);
-    $sync->delete('action.settings');
     $sync->delete('text.settings');
 
     $system_theme = $this->config('system.theme')->get();
@@ -188,13 +185,11 @@
     $this->drupalGet('admin/config/development/configuration');
     $this->assertRaw('<td>core.extension');
     $this->assertRaw('<td>system.theme');
-    $this->assertRaw('<td>action.settings');
 
     // Import and verify that both do not appear anymore.
     $this->drupalPostForm(NULL, [], t('Import all'));
     $this->assertNoRaw('<td>core.extension');
     $this->assertNoRaw('<td>system.theme');
-    $this->assertNoRaw('<td>action.settings');
 
     $this->rebuildContainer();
     $this->assertFalse(\Drupal::moduleHandler()->moduleExists('ban'), 'Ban module uninstalled during import.');
@@ -213,10 +208,10 @@
     $theme_info = \Drupal::service('theme_handler')->listInfo();
     $this->assertFalse(isset($theme_info['bartik']), 'Bartik theme uninstalled during import.');
 
-    // Verify that the action.settings configuration object was only deleted
+    // Verify that the system.site configuration object was only deleted
     // once during the import process.
-    $delete_called = \Drupal::state()->get('ConfigImportUITest.action.settings.delete', 0);
-    $this->assertIdentical($delete_called, 1, "The action.settings configuration was deleted once during configuration import.");
+    $delete_called = \Drupal::state()->get('ConfigImportUITest.system.site.delete', 0);
+    $this->assertIdentical($delete_called, 1, "The system.site configuration was deleted once during configuration import.");
   }
 
   /**
only in patch2:
--- /dev/null
+++ b/core/modules/action/action.install
@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the action module.
+ */
+
+/**
+ * Removes the action.settings configuration.
+ */
+function action_update_8001() {
+  \Drupal::configFactory()->getEditable('action.settings')->delete();
+}