fix

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

@@ -107,12 +107,7 @@ export class Batch {
 			this.render_effects = [];
 			this.effects = [];
 
-			// commit changes
-			for (const fn of this.#callbacks) {
-				fn();
-			}
-
-			this.#callbacks.clear();
+			this.commit();
 
 			flush_queued_effects(render_effects);
 			flush_queued_effects(effects);
@@ -174,12 +169,25 @@ export class Batch {
 		fn();
 	}
 
+	commit() {
+		// commit changes
+		for (const fn of this.#callbacks) {
+			fn();
+		}
+
+		this.#callbacks.clear();
+	}
+
 	increment() {
 		this.#pending += 1;
 	}
 
 	decrement() {
 		this.#pending -= 1;
+
+		if (this.#pending === 0) {
+			this.commit();
+		}
 	}
 
 	settled() {

packages/svelte/tests/runtime-runes/samples/async-derived-in-if/_config.js

@@ -2,11 +2,6 @@ import { flushSync } from 'svelte';
 import { test } from '../../test';
 
 export default test({
-	html: `
-		<button>show</button>
-		<p>pending</p>
-	`,
-
 	async test({ assert, target }) {
 		const button = target.querySelector('button');