diff --git a/.changeset/mighty-dryers-smoke.md b/.changeset/mighty-dryers-smoke.md
new file mode 100644
index 0000000000..c9b638aacd
--- /dev/null
+++ b/.changeset/mighty-dryers-smoke.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: correctly initialise effects inside nested root