diff --git a/.changeset/eleven-weeks-dance.md b/.changeset/eleven-weeks-dance.md
new file mode 100644
index 0000000000..c382f76a51
--- /dev/null
+++ b/.changeset/eleven-weeks-dance.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+chore: refactor task microtask dispatching + boundary scheduling
diff --git a/packages/svelte/src/internal/client/dom/blocks/boundary.js b/packages/svelte/src/internal/client/dom/blocks/boundary.js
index ed2cddbed2..6036746b7f 100644
--- a/packages/svelte/src/internal/client/dom/blocks/boundary.js
+++ b/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;
 						}