only in patch2:
unchanged:
--- a/core/includes/config.inc
+++ b/core/includes/config.inc
@@ -41,8 +41,10 @@
  * @see \Drupal\Core\Config\ConfigInstaller
  */
 function config_install_default_config($type, $name) {
-  // Get all default configuration owned by this extension.
-  $source_storage = new ExtensionInstallStorage();
+  // Get all default configuration owned by this extension. During installation
+  // this should include config from the installation profile. During normal
+  // runtime the installation profile should be ignored.
+  $source_storage = new ExtensionInstallStorage(drupal_get_profile(), drupal_installation_attempted());
   $config_to_install = $source_storage->listAll($name . '.');
 
   // Work out if this extension provides default configuration for any other
only in patch2:
unchanged:
--- a/core/lib/Drupal/Core/Config/ExtensionInstallStorage.php
+++ b/core/lib/Drupal/Core/Config/ExtensionInstallStorage.php
@@ -16,6 +16,36 @@
 class ExtensionInstallStorage extends InstallStorage {
 
   /**
+   * Include profile config directories
+   *.
+   * @var bool
+   */
+  protected $includeProfile;
+
+  /**
+   * The installation profile.
+   *
+   * @var string
+   */
+  protected $profile;
+
+  /**
+   * Constructs a new FileStorage controller.
+   *
+   * @param string $profile
+   *   The name of the installation profile used on the site.
+   * @param bool $include_profile
+   *   If TRUE, include default configuration from the installation profile's
+   *   config directory.
+   *
+   * Overrides Drupal\Core\Config\FileStorage::__construct().
+   */
+  public function __construct($profile, $include_profile = FALSE) {
+    $this->includeProfile = $include_profile;
+    $this->profile = $profile;
+  }
+
+  /**
    * Returns a map of all config object names and their folders.
    *
    * The list is based on enabled modules and themes.
@@ -25,7 +55,13 @@ class ExtensionInstallStorage extends InstallStorage {
    */
   protected function getAllFolders() {
     if (!isset($this->folders)) {
-      $this->folders = $this->getComponentNames('module', array_keys(\Drupal::moduleHandler()->getModuleList()));
+      $module_list = \Drupal::moduleHandler()->getModuleList();
+      // Only include the profile module's config if $this->includeProfile is
+      // set to TRUE.
+      if (!$this->includeProfile && isset($module_list[$this->profile])) {
+        unset($module_list[$this->profile]);
+      }
+      $this->folders = $this->getComponentNames('module', array_keys($module_list));
       $this->folders += $this->getComponentNames('theme', array_keys(array_filter(list_themes(), function ($theme) {return $theme->status;})));
     }
     return $this->folders;