diff --git a/packages/runtime-core/src/componentSlots.ts b/packages/runtime-core/src/componentSlots.ts
index ec58fd69..682a107e 100644
--- a/packages/runtime-core/src/componentSlots.ts
+++ b/packages/runtime-core/src/componentSlots.ts
@@ -63,6 +63,10 @@ const normalizeSlot = (
   rawSlot: Function,
   ctx: ComponentInternalInstance | null | undefined
 ): Slot => {
+  if ((rawSlot as any)._n) {
+    // already normalized - #5353
+    return rawSlot as Slot
+  }
   const normalized = withCtx((...args: any[]) => {
     if (__DEV__ && currentInstance) {
       warn(