fix

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

@@ -1,6 +1,6 @@
 /** @import { Effect, TemplateNode } from '#client' */
 import { FILENAME, HYDRATION_ERROR } from '../../../../constants.js';
-import { block, branch, destroy_effect, template_effect } from '../../reactivity/effects.js';
+import { branch, destroy_effect, template_effect } from '../../reactivity/effects.js';
 import { hydrate_next, hydrate_node, hydrating, set_hydrate_node } from '../hydration.js';
 import { create_fragment_from_html } from '../reconciler.js';
 import { assign_nodes } from '../template.js';
@@ -9,8 +9,6 @@ import { hash, sanitize_location } from '../../../../utils.js';
 import { DEV } from 'esm-env';
 import { dev_current_component_function } from '../../context.js';
 import { get_first_child, get_next_sibling } from '../operations.js';
-import { active_effect, suspended } from '../../runtime.js';
-import { add_boundary_callback, find_boundary } from './boundary.js';
 
 /**
  * @param {Element} element

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

@@ -10,7 +10,7 @@ import {
 } from '../hydration.js';
 import { block, branch, pause_effect, resume_effect } from '../../reactivity/effects.js';
 import { HYDRATION_START_ELSE, UNINITIALIZED } from '../../../../constants.js';
-import { active_effect, suspended } from '../../runtime.js';
+import { active_effect } from '../../runtime.js';
 import { add_boundary_callback, find_boundary } from './boundary.js';
 import { should_defer_append } from '../operations.js';
 

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

@@ -2,10 +2,11 @@
 import { UNINITIALIZED } from '../../../../constants.js';
 import { block, branch, pause_effect } from '../../reactivity/effects.js';
 import { not_equal, safe_not_equal } from '../../reactivity/equality.js';
-import { active_effect, suspended } from '../../runtime.js';
+import { active_effect } from '../../runtime.js';
 import { is_runes } from '../../context.js';
 import { hydrate_next, hydrate_node, hydrating } from '../hydration.js';
 import { add_boundary_callback, find_boundary } from './boundary.js';
+import { should_defer_append } from '../operations.js';
 
 /**
  * @template V
@@ -57,14 +58,16 @@ export function key_block(node, get_key, render_fn) {
 		if (changed(key, (key = get_key()))) {
 			var target = anchor;
 
-			if (suspended) {
+			var defer = boundary !== null && should_defer_append();
+
+			if (defer) {
 				offscreen_fragment = document.createDocumentFragment();
 				offscreen_fragment.append((target = document.createComment('')));
 			}
 
 			pending_effect = branch(() => render_fn(target));
 
-			if (suspended) {
+			if (defer) {
 				add_boundary_callback(boundary, commit);
 			} else {
 				commit();

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

@@ -97,8 +97,6 @@ export let active_reaction = null;
 
 export let untracking = false;
 
-export let suspended = false;
-
 /** @param {null | Reaction} reaction */
 export function set_active_reaction(reaction) {
 	active_reaction = reaction;