diff --git a/core/lib/Drupal/Core/Extension/module.api.php b/core/lib/Drupal/Core/Extension/module.api.php
index e30fd87..877cca9 100644
--- a/core/lib/Drupal/Core/Extension/module.api.php
+++ b/core/lib/Drupal/Core/Extension/module.api.php
@@ -201,6 +201,12 @@ function hook_modules_installed($modules) {
  * See the @link https://www.drupal.org/node/146843 Schema API documentation
  * @endlink for details on hook_schema and how database tables are defined.
  *
+ * If the module edits the current site configuration or creates a new
+ * config/content entity make sure that config installer should not be in
+ * syncing state. See shortcut_install() to see how to edit current site
+ * configuration or see forum_install() to see how to create content during
+ * hook install.
+ *
  * Note that since this function is called from a full bootstrap, all functions
  * (including those in modules enabled by the current page request) are
  * available when this hook is called. Use cases could be displaying a user
@@ -219,6 +225,10 @@ function hook_install() {
   $directory = file_default_scheme() . '://styles';
   $mode = isset($GLOBALS['install_state']['mode']) ? $GLOBALS['install_state']['mode'] : NULL;
   file_prepare_directory($directory, FILE_CREATE_DIRECTORY | FILE_MODIFY_PERMISSIONS, $mode);
+
+  if (!\Drupal::service('config.installer')->isSyncing() && \Drupal::moduleHandler()->moduleExists('some_module')) {
+    \Drupal::configFactory()->getEditable('some_module.settings')->set('third_party_settings.my_module.some_key', TRUE)->save(TRUE);
+  }
 }
 
 /**