fix: wait for title before updating announcer (#10363)

* fix: wait for title before updating announcer

* changeset

Author: geoffrich

.changeset/lemon-berries-attack.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: wait a tick before announcing new page title

packages/kit/src/core/sync/write_root.js

@@ -40,7 +40,7 @@ export function write_root(manifest_data, output) {
 		dedent`
 			<!-- This file is generated by @sveltejs/kit — do not edit it! -->
 			<script>
-				import { setContext, afterUpdate, onMount } from 'svelte';
+				import { setContext, afterUpdate, onMount, tick } from 'svelte';
 				import { browser } from '$app/environment';
 
 				// stores
@@ -67,7 +67,9 @@ export function write_root(manifest_data, output) {
 					const unsubscribe = stores.page.subscribe(() => {
 						if (mounted) {
 							navigated = true;
-							title = document.title || 'untitled page';
+							tick().then(() => {
+								title = document.title || 'untitled page';
+							});
 						}
 					});