From 7c113d6eabf1e1d99faba070e8e9f936fe201eb7 Mon Sep 17 00:00:00 2001
From: David Roizenman <david@hmnd.io>
Date: Sun, 14 Dec 2025 22:09:35 -0800
Subject: [PATCH] fix: reconnect deriveds inside branch effects

---
 packages/svelte/src/internal/client/runtime.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/svelte/src/internal/client/runtime.js b/packages/svelte/src/internal/client/runtime.js
index 64c8409b8f..b42fba7add 100644
--- a/packages/svelte/src/internal/client/runtime.js
+++ b/packages/svelte/src/internal/client/runtime.js
@@ -28,7 +28,6 @@ import { old_values } from './reactivity/sources.js';
 import {
 	destroy_derived_effects,
 	execute_derived,
-	current_async_effect,
 	recent_async_deriveds,
 	update_derived
 } from './reactivity/deriveds.js';
@@ -629,7 +628,11 @@ export function get(signal) {
 			update_derived(derived);
 		}
 
-		if (is_updating_effect && effect_tracking() && (derived.f & CONNECTED) === 0) {
+		if (
+			is_updating_effect &&
+			(derived.f & CONNECTED) === 0 &&
+			(effect_tracking() || (active_effect !== null && (active_effect.f & BRANCH_EFFECT) !== 0))
+		) {
 			reconnect(derived);
 		}
 	}