diff --git a/tests/phpunit/tests/rest-api/rest-post-meta-fields.php b/tests/phpunit/tests/rest-api/rest-post-meta-fields.php
index 71bcfdcd87..61cce6a1f5 100644
--- a/tests/phpunit/tests/rest-api/rest-post-meta-fields.php
+++ b/tests/phpunit/tests/rest-api/rest-post-meta-fields.php
@@ -2120,6 +2120,44 @@ class WP_Test_REST_Post_Meta_Fields extends WP_Test_REST_TestCase {
 		$this->assertEquals( array( 'BuddyPress' ), $meta[1] );
 	}
 
+	public function test_update_meta_with_unchanged_values() {
+		register_post_meta(
+			'post',
+			'list',
+			array(
+				'single'       => true,
+				'type'         => 'array',
+				'show_in_rest' => array(
+					'schema' => array(
+						'type'  => 'array',
+						'items' => array(
+							'type' => 'string',
+						),
+					),
+				),
+			)
+		);
+
+		add_post_meta( self::$post_id, 'list', array( 'WordCamp' ) );
+
+		$this->grant_write_permission();
+
+		$request = new WP_REST_Request( 'PUT', sprintf( '/wp/v2/posts/%d', self::$post_id ) );
+		$request->set_body_params(
+			array(
+				'meta' => array(
+					'list' => array( 'WordCamp' ),
+				),
+			)
+		);
+
+		$response = rest_get_server()->dispatch( $request );
+		$this->assertEquals( 200, $response->get_status() );
+
+		$data = $response->get_data();
+		$this->assertEquals( array( 'WordCamp' ), $data['meta']['list'] );
+	}
+
 	/**
 	 * Internal function used to disable an insert query which
 	 * will trigger a wpdb error for testing purposes.