diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived-log-outside-reactivity/_config.js b/packages/svelte/tests/runtime-runes/samples/async-derived-log-outside-reactivity/_config.js
new file mode 100644
index 0000000000..1a7ed0eb92
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived-log-outside-reactivity/_config.js
@@ -0,0 +1,42 @@
+import { tick } from 'svelte';
+import { test } from '../../test';
+
+export default test({
+	skip: true, // TODO fix
+	async test({ assert, target, logs }) {
+		await tick();
+
+		const [a, b, log, resolve] = target.querySelectorAll('button');
+		const [p] = target.querySelectorAll('p');
+
+		a.click();
+		await tick();
+		assert.htmlEqual(p.innerHTML, '0 0 0');
+
+		b.click();
+		await tick();
+		assert.htmlEqual(p.innerHTML, '0 0 0');
+
+		log.click();
+		await tick();
+		assert.deepEqual(logs, [0, 2]);
+
+		resolve.click();
+		await tick();
+		assert.htmlEqual(p.innerHTML, '1 0 1');
+		assert.deepEqual(logs, [0, 2, 1]);
+
+		log.click();
+		await tick();
+		assert.deepEqual(logs, [0, 2, 1, 2]);
+
+		resolve.click();
+		await tick();
+		assert.htmlEqual(p.innerHTML, '1 1 2');
+		assert.deepEqual(logs, [0, 2, 1, 2, 2]);
+
+		log.click();
+		await tick();
+		assert.deepEqual(logs, [0, 2, 1, 2, 2, 2]);
+	}
+});
diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived-log-outside-reactivity/main.svelte b/packages/svelte/tests/runtime-runes/samples/async-derived-log-outside-reactivity/main.svelte
new file mode 100644
index 0000000000..bf543ba595
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived-log-outside-reactivity/main.svelte
@@ -0,0 +1,23 @@
+<script>
+	let a = $state(0);
+	let b = $state(0);
+
+	let d = $derived(a + b);
+
+	let queued = [];
+	function push(v) {
+		if (!v) return v;
+		return new Promise((resolve) => {
+			queued.push(() => resolve(v));
+		});
+	}
+
+	$effect(() => console.log(d));
+</script>
+
+<button onclick={() => a++}>a++</button>
+<button onclick={() => b++}>b++</button>
+<button onclick={() => console.log(d)}>log d</button>
+<button onclick={() => queued.shift()?.()}>resolve</button>
+
+<p>{await push(a)} {await push(b)} {d}</p>
diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived-not-overfiring/_config.js b/packages/svelte/tests/runtime-runes/samples/async-derived-not-overfiring/_config.js
new file mode 100644
index 0000000000..b959ba5407
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived-not-overfiring/_config.js
@@ -0,0 +1,35 @@
+import { tick } from 'svelte';
+import { test } from '../../test';
+
+export default test({
+	skip: true, // TODO fix
+	async test({ assert, target, logs }) {
+		await tick();
+
+		const [a, b, log, resolve] = target.querySelectorAll('button');
+		const [div] = target.querySelectorAll('div');
+
+		assert.deepEqual(logs, ['e1 0', 'e2 0']);
+		logs.length = 0;
+
+		a.click();
+		await tick();
+		assert.htmlEqual(div.innerHTML, '<p>0</p> <p>0</p> <p>0</p>');
+
+		b.click();
+		await tick();
+		assert.htmlEqual(div.innerHTML, '<p>0</p> <p>1</p> <p>1</p>');
+
+		log.click();
+		await tick();
+		assert.deepEqual(logs, ['e1 1', 'e2 1', 'runs 2']); // ideally it's only 2 runs, one or two more would also be acceptable but not the 8 that it's today
+		logs.length = 0;
+
+		resolve.click();
+		await tick();
+		log.click();
+		await tick();
+		assert.htmlEqual(div.innerHTML, '<p>1</p> <p>2</p> <p>2</p>');
+		assert.deepEqual(logs, ['e1 2', 'e2 2', 'runs 3']);
+	}
+});
diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived-not-overfiring/main.svelte b/packages/svelte/tests/runtime-runes/samples/async-derived-not-overfiring/main.svelte
new file mode 100644
index 0000000000..784932ab5d
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived-not-overfiring/main.svelte
@@ -0,0 +1,29 @@
+<script>
+	let a = $state(0);
+	let b = $state(0);
+	let runs = 0;
+
+	let d = $derived((runs++, a + b));
+
+	const queued = [];
+	function push(v) {
+		if (!v) return v;
+		return new Promise((resolve) => {
+			queued.push(() => resolve(v));
+		});
+	}
+
+	$effect(() => console.log('e1 ' + d));
+	$effect(() => console.log('e2 ' + d));
+</script>
+
+<button onclick={() => a++}>a++</button>
+<button onclick={() => b++}>b++</button>
+<button onclick={() => console.log('runs ' + runs)}>log runs</button>
+<button onclick={() => queued.shift()?.()}>resolve</button>
+
+<div>
+	<p>{await push(a)}</p>
+	<p>{d}</p>
+	<p>{d}</p>
+</div>
diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived-not-underfiring/_config.js b/packages/svelte/tests/runtime-runes/samples/async-derived-not-underfiring/_config.js
new file mode 100644
index 0000000000..7d31d30b46
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived-not-underfiring/_config.js
@@ -0,0 +1,28 @@
+import { tick } from 'svelte';
+import { test } from '../../test';
+
+export default test({
+	skip: true, // TODO fix
+	async test({ assert, target, logs }) {
+		await tick();
+
+		const [a, b, resolve] = target.querySelectorAll('button');
+		const [p] = target.querySelectorAll('p');
+
+		assert.deepEqual(logs, ['b: 0, d: 0']);
+		logs.length = 0;
+
+		a.click();
+		await tick();
+		b.click();
+		await tick();
+		assert.htmlEqual(p.innerHTML, '0 1');
+		assert.deepEqual(logs, ['b: 1, d: 0']);
+		logs.length = 0;
+
+		resolve.click();
+		await tick();
+		assert.htmlEqual(p.innerHTML, '2 1');
+		assert.deepEqual(logs, ['b: 1, d: 2']);
+	}
+});
diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived-not-underfiring/main.svelte b/packages/svelte/tests/runtime-runes/samples/async-derived-not-underfiring/main.svelte
new file mode 100644
index 0000000000..97d91ae994
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived-not-underfiring/main.svelte
@@ -0,0 +1,22 @@
+<script>
+	let a = $state(0);
+	let b = $state(0);
+
+	let d = $derived(a * 2);
+
+	const queued = [];
+	function push(v) {
+		if (!v) return v;
+		return new Promise((resolve) => {
+			queued.push(() => resolve(v));
+		});
+	}
+
+	$effect(() => console.log(`b: ${b}, d: ${d}`));
+</script>
+
+<button onclick={() => a++}>a++</button>
+<button onclick={() => b++}>b++</button>
+<button onclick={() => queued.shift()?.()}>resolve</button>
+
+<p>{await push(d)} {b}</p>