diff --git a/wp-includes/nav-menu.php b/wp-includes/nav-menu.php
index c289c2c916..613d2ead92 100644
--- a/wp-includes/nav-menu.php
+++ b/wp-includes/nav-menu.php
@@ -410,13 +410,15 @@ function wp_update_nav_menu_object( $menu_id = 0, $menu_data = array() ) {
  * to be pre-slashed since they are passed directly to APIs that expect slashed data.
  *
  * @since 3.0.0
+ * @since 5.9.0 Added the `$fire_after_hooks` parameter.
  *
  * @param int   $menu_id         The ID of the menu. Required. If "0", makes the menu item a draft orphan.
  * @param int   $menu_item_db_id The ID of the menu item. If "0", creates a new menu item.
  * @param array $menu_item_data  The menu item's data.
+ * @param bool  $fire_after_hooks Whether to fire the after insert hooks. Default true.
  * @return int|WP_Error The menu item's database ID or WP_Error object on failure.
  */
-function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array() ) {
+function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array(), $fire_after_hooks = true ) {
 	$menu_id         = (int) $menu_id;
 	$menu_item_db_id = (int) $menu_item_db_id;
 
@@ -526,7 +528,7 @@ function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item
 	if ( ! $update ) {
 		$post['ID']          = 0;
 		$post['post_status'] = 'publish' === $args['menu-item-status'] ? 'publish' : 'draft';
-		$menu_item_db_id     = wp_insert_post( $post, true );
+		$menu_item_db_id     = wp_insert_post( $post, true, $fire_after_hooks );
 		if ( ! $menu_item_db_id || is_wp_error( $menu_item_db_id ) ) {
 			return $menu_item_db_id;
 		}
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-controller.php
index 0bbc54169e..46d5a8a831 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-global-styles-controller.php
@@ -146,13 +146,13 @@ class WP_REST_Global_Styles_Controller extends WP_REST_Controller {
 	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
 	 */
 	public function update_item( $request ) {
-		$post = get_post( $request['id'] );
-		if ( ! $post || 'wp_global_styles' !== $post->post_type ) {
+		$post_before = get_post( $request['id'] );
+		if ( ! $post_before || 'wp_global_styles' !== $post_before->post_type ) {
 			return new WP_Error( 'rest_global_styles_not_found', __( 'No global styles config exist with that id.' ), array( 'status' => 404 ) );
 		}
 
 		$changes = $this->prepare_item_for_database( $request );
-		$result  = wp_update_post( wp_slash( (array) $changes ), true );
+		$result  = wp_update_post( wp_slash( (array) $changes ), true, false );
 		if ( is_wp_error( $result ) ) {
 			return $result;
 		}
@@ -163,10 +163,11 @@ class WP_REST_Global_Styles_Controller extends WP_REST_Controller {
 			return $fields_update;
 		}
 
-		return $this->prepare_item_for_response(
-			get_post( $request['id'] ),
-			$request
-		);
+		wp_after_insert_post( $post, true, $post_before );
+
+		$response = $this->prepare_item_for_response( $post, $request );
+
+		return rest_ensure_response( $response );
 	}
 
 	/**
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php
index 7a96e0a425..57ddc38078 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php
@@ -122,7 +122,7 @@ class WP_REST_Menu_Items_Controller extends WP_REST_Posts_Controller {
 		}
 		$prepared_nav_item = (array) $prepared_nav_item;
 
-		$nav_menu_item_id = wp_update_nav_menu_item( $prepared_nav_item['menu-id'], $prepared_nav_item['menu-item-db-id'], wp_slash( $prepared_nav_item ) );
+		$nav_menu_item_id = wp_update_nav_menu_item( $prepared_nav_item['menu-id'], $prepared_nav_item['menu-item-db-id'], wp_slash( $prepared_nav_item ), false );
 		if ( is_wp_error( $nav_menu_item_id ) ) {
 			if ( 'db_insert_error' === $nav_menu_item_id->get_error_code() ) {
 				$nav_menu_item_id->add_data( array( 'status' => 500 ) );
@@ -181,7 +181,10 @@ class WP_REST_Menu_Items_Controller extends WP_REST_Posts_Controller {
 		 */
 		do_action( 'rest_after_insert_nav_menu_item', $nav_menu_item, $request, true );
 
-		$response = $this->prepare_item_for_response( get_post( $nav_menu_item_id ), $request );
+		$post = get_post( $nav_menu_item_id );
+		wp_after_insert_post( $post, false, null );
+
+		$response = $this->prepare_item_for_response( $post, $request );
 		$response = rest_ensure_response( $response );
 
 		$response->set_status( 201 );
@@ -204,7 +207,7 @@ class WP_REST_Menu_Items_Controller extends WP_REST_Posts_Controller {
 		if ( is_wp_error( $valid_check ) ) {
 			return $valid_check;
 		}
-
+		$post_before       = get_post( $request['id'] );
 		$prepared_nav_item = $this->prepare_item_for_database( $request );
 
 		if ( is_wp_error( $prepared_nav_item ) ) {
@@ -213,7 +216,7 @@ class WP_REST_Menu_Items_Controller extends WP_REST_Posts_Controller {
 
 		$prepared_nav_item = (array) $prepared_nav_item;
 
-		$nav_menu_item_id = wp_update_nav_menu_item( $prepared_nav_item['menu-id'], $prepared_nav_item['menu-item-db-id'], wp_slash( $prepared_nav_item ) );
+		$nav_menu_item_id = wp_update_nav_menu_item( $prepared_nav_item['menu-id'], $prepared_nav_item['menu-item-db-id'], wp_slash( $prepared_nav_item ), false );
 
 		if ( is_wp_error( $nav_menu_item_id ) ) {
 			if ( 'db_update_error' === $nav_menu_item_id->get_error_code() ) {
@@ -245,6 +248,7 @@ class WP_REST_Menu_Items_Controller extends WP_REST_Posts_Controller {
 			}
 		}
 
+		$post          = get_post( $nav_menu_item_id );
 		$nav_menu_item = $this->get_nav_menu_item( $nav_menu_item_id );
 		$fields_update = $this->update_additional_fields_for_object( $nav_menu_item, $request );
 
@@ -257,6 +261,8 @@ class WP_REST_Menu_Items_Controller extends WP_REST_Posts_Controller {
 		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php */
 		do_action( 'rest_after_insert_nav_menu_item', $nav_menu_item, $request, false );
 
+		wp_after_insert_post( $post, true, $post_before );
+
 		$response = $this->prepare_item_for_response( get_post( $nav_menu_item_id ), $request );
 
 		return rest_ensure_response( $response );
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php
index 0c149bab93..c3df07e7f5 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php
@@ -266,6 +266,8 @@ class WP_REST_Templates_Controller extends WP_REST_Controller {
 			return new WP_Error( 'rest_template_not_found', __( 'No templates exist with that id.' ), array( 'status' => 404 ) );
 		}
 
+		$post_before = get_post( $template->wp_id );
+
 		if ( isset( $request['source'] ) && 'theme' === $request['source'] ) {
 			wp_delete_post( $template->wp_id, true );
 			$request->set_param( 'context', 'edit' );
@@ -283,9 +285,12 @@ class WP_REST_Templates_Controller extends WP_REST_Controller {
 		}
 
 		if ( 'custom' === $template->source ) {
-			$result = wp_update_post( wp_slash( (array) $changes ), true );
+			$update = true;
+			$result = wp_update_post( wp_slash( (array) $changes ), false );
 		} else {
-			$result = wp_insert_post( wp_slash( (array) $changes ), true );
+			$update      = false;
+			$post_before = null;
+			$result      = wp_insert_post( wp_slash( (array) $changes ), false );
 		}
 
 		if ( is_wp_error( $result ) ) {
@@ -309,6 +314,8 @@ class WP_REST_Templates_Controller extends WP_REST_Controller {
 		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
 		do_action( "rest_after_insert_{$this->post_type}", $post, $request, false );
 
+		wp_after_insert_post( $post, $update, $post_before );
+
 		$response = $this->prepare_item_for_response( $template, $request );
 
 		return rest_ensure_response( $response );
@@ -367,6 +374,8 @@ class WP_REST_Templates_Controller extends WP_REST_Controller {
 		/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
 		do_action( "rest_after_insert_{$this->post_type}", $post, $request, true );
 
+		wp_after_insert_post( $post, false, null );
+
 		$response = $this->prepare_item_for_response( $template, $request );
 		$response = rest_ensure_response( $response );
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index efd207d6e9..d34f6bd959 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52275';
+$wp_version = '5.9-alpha-52276';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.