fix

packages/svelte/src/internal/client/reactivity/async.js

@@ -224,6 +224,7 @@ export async function async_body(fn) {
 	} finally {
 		if (next_hydrate_node) {
 			set_hydrate_node(next_hydrate_node);
+			hydrate_next();
 		}
 	}
 

packages/svelte/tests/runtime-runes/samples/async-no-pending-await-in-script-2/Child.svelte

@@ -0,0 +1,3 @@
+<script lang="ts">
+	await 1;
+</script>

packages/svelte/tests/runtime-runes/samples/async-no-pending-await-in-script-2/_config.js

@@ -0,0 +1,13 @@
+import { tick } from 'svelte';
+import { test } from '../../test';
+
+export default test({
+	skip_mode: ['server'],
+
+	ssrHtml: '<p>hello</p>',
+
+	async test({ assert, target }) {
+		await tick();
+		assert.htmlEqual(target.innerHTML, '<p>hello</p>');
+	}
+});

packages/svelte/tests/runtime-runes/samples/async-no-pending-await-in-script-2/main.svelte

@@ -0,0 +1,9 @@
+<script>
+	import Child from './Child.svelte';
+</script>
+
+<Child />
+
+{#if true}
+	<p>hello</p>
+{/if}