merge

.changeset/eleven-weeks-dance.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+chore: refactor task microtask dispatching + boundary scheduling

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

@@ -109,7 +109,7 @@ export function boundary(node, props, boundary_fn) {
 
 				if (async_count++ === 0) {
 					queue_boundary_micro_task(() => {
-						if (async_effect) {
+						if (async_effect || !boundary_effect) {
 							return;
 						}