fix

packages/svelte/src/internal/client/dom/blocks/boundary.js

@@ -79,15 +79,6 @@ export class Boundary {
 	/** @type {Effect} */
 	#effect;
 
-	/** @type {Set<() => void>} */
-	#callbacks = new Set();
-
-	/** @type {Effect[]} */
-	#render_effects = [];
-
-	/** @type {Effect[]} */
-	#effects = [];
-
 	/** @type {Effect | null} */
 	#main_effect = null;
 
@@ -230,16 +221,6 @@ export class Boundary {
 		}
 	}
 
-	/** @param {() => void} fn */
-	add_callback(fn) {
-		this.#callbacks.add(fn);
-	}
-
-	/** @param {Effect} effect */
-	add_effect(effect) {
-		((effect.f & RENDER_EFFECT) !== 0 ? this.#render_effects : this.#effects).push(effect);
-	}
-
 	commit() {
 		if (this.#keep_pending_snippet || this.#pending_count > 0) {
 			return;
@@ -247,19 +228,6 @@ export class Boundary {
 
 		this.suspended = false;
 
-		for (const e of this.#render_effects) {
-			try {
-				if (check_dirtiness(e)) {
-					update_effect(e);
-				}
-			} catch (error) {
-				handle_error(error, e, null, e.ctx);
-			}
-		}
-
-		for (const fn of this.#callbacks) fn();
-		this.#callbacks.clear();
-
 		if (this.#pending_effect) {
 			pause_effect(this.#pending_effect, () => {
 				this.#pending_effect = null;
@@ -270,16 +238,6 @@ export class Boundary {
 			this.#anchor.before(this.#offscreen_fragment);
 			this.#offscreen_fragment = null;
 		}
-
-		for (const e of this.#effects) {
-			try {
-				if (check_dirtiness(e)) {
-					update_effect(e);
-				}
-			} catch (error) {
-				handle_error(error, e, null, e.ctx);
-			}
-		}
 	}
 
 	increment() {

packages/svelte/src/internal/client/dom/blocks/each.js

@@ -39,6 +39,7 @@ import { queue_micro_task } from '../task.js';
 import { active_effect, get } from '../../runtime.js';
 import { DEV } from 'esm-env';
 import { derived_safe_equal } from '../../reactivity/deriveds.js';
+import { active_fork } from '../../reactivity/forks.js';
 
 /**
  * The row of a keyed each block that is currently updating. We track this
@@ -267,7 +268,7 @@ export function each(node, flags, get_collection, get_key, render_fn, fallback_f
 				fallback = branch(() => fallback_fn(anchor));
 			}
 		} else {
-			if (boundary !== null && should_defer_append()) {
+			if (active_fork !== null && should_defer_append()) {
 				for (i = 0; i < length; i += 1) {
 					value = array[i];
 					key = get_key(value, i);
@@ -298,7 +299,7 @@ export function each(node, flags, get_collection, get_key, render_fn, fallback_f
 					}
 				}
 
-				boundary?.add_callback(commit);
+				active_fork?.add_callback(commit);
 			} else {
 				commit();
 			}

packages/svelte/src/internal/client/dom/blocks/if.js

@@ -12,6 +12,7 @@ import { block, branch, pause_effect, resume_effect } from '../../reactivity/eff
 import { HYDRATION_START_ELSE, UNINITIALIZED } from '../../../../constants.js';
 import { create_text, should_defer_append } from '../operations.js';
 import { active_effect } from '../../runtime.js';
+import { active_fork } from '../../reactivity/forks.js';
 
 /**
  * @param {TemplateNode} node
@@ -109,7 +110,7 @@ export function if_block(node, fn, elseif = false) {
 			}
 		}
 
-		var defer = boundary !== null && should_defer_append();
+		var defer = active_fork !== null && should_defer_append();
 		var target = anchor;
 
 		if (defer) {
@@ -122,7 +123,7 @@ export function if_block(node, fn, elseif = false) {
 		}
 
 		if (defer) {
-			boundary?.add_callback(commit);
+			active_fork?.add_callback(commit);
 			target.remove();
 		} else {
 			commit();

packages/svelte/src/internal/client/dom/blocks/key.js

@@ -6,6 +6,7 @@ import { is_runes } from '../../context.js';
 import { hydrate_next, hydrate_node, hydrating } from '../hydration.js';
 import { create_text, should_defer_append } from '../operations.js';
 import { active_effect } from '../../runtime.js';
+import { active_fork } from '../../reactivity/forks.js';
 
 /**
  * @template V
@@ -54,7 +55,7 @@ export function key_block(node, get_key, render_fn) {
 		if (changed(key, (key = get_key()))) {
 			var target = anchor;
 
-			var defer = boundary !== null && should_defer_append();
+			var defer = active_fork !== null && should_defer_append();
 
 			if (defer) {
 				offscreen_fragment = document.createDocumentFragment();
@@ -64,7 +65,7 @@ export function key_block(node, get_key, render_fn) {
 			pending_effect = branch(() => render_fn(target));
 
 			if (defer) {
-				boundary?.add_callback(commit);
+				active_fork?.add_callback(commit);
 				target.remove();
 			} else {
 				commit();

packages/svelte/src/internal/client/dom/blocks/svelte-component.js

@@ -1,6 +1,7 @@
 /** @import { TemplateNode, Dom, Effect } from '#client' */
 import { EFFECT_TRANSPARENT } from '../../constants.js';
 import { block, branch, pause_effect } from '../../reactivity/effects.js';
+import { active_fork } from '../../reactivity/forks.js';
 import { active_effect } from '../../runtime.js';
 import { hydrate_next, hydrate_node, hydrating } from '../hydration.js';
 import { create_text, should_defer_append } from '../operations.js';
@@ -51,7 +52,7 @@ export function component(node, get_component, render_fn) {
 	block(() => {
 		if (component === (component = get_component())) return;
 
-		var defer = boundary !== null && should_defer_append();
+		var defer = active_fork !== null && should_defer_append();
 
 		if (component) {
 			var target = anchor;
@@ -69,7 +70,7 @@ export function component(node, get_component, render_fn) {
 		}
 
 		if (defer) {
-			boundary?.add_callback(commit);
+			active_fork?.add_callback(commit);
 		} else {
 			commit();
 		}

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

@@ -28,6 +28,9 @@ export class Fork {
 	/** @type {Set<Effect>} */
 	skipped_effects = new Set();
 
+	/** @type {Set<() => void>} */
+	#callbacks = new Set();
+
 	#pending = 0;
 
 	apply() {
@@ -118,6 +121,17 @@ export class Fork {
 		return this.#pending === 0;
 	}
 
+	/** @param {() => void} fn */
+	add_callback(fn) {
+		this.#callbacks.add(fn);
+	}
+
+	commit() {
+		for (const fn of this.#callbacks) {
+			fn();
+		}
+	}
+
 	static ensure() {
 		if (active_fork === null) {
 			active_fork = new Fork();

packages/svelte/src/internal/client/runtime.js

@@ -862,6 +862,7 @@ function process_effects(effect, fork) {
 	}
 
 	if (async_effects.length === 0 && fork.settled()) {
+		fork.commit();
 		flush_queued_effects(render_effects);
 		flush_queued_effects(effects);
 	}