From 95e41205b235b30d39f13c5d315f73beaebfffd2 Mon Sep 17 00:00:00 2001
From: daiwei <daiwei521@126.com>
Date: Thu, 10 Jul 2025 22:34:44 +0800
Subject: [PATCH] fix(slots): refine condition to avoid copying compile marker

---
 packages/runtime-core/src/componentSlots.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/runtime-core/src/componentSlots.ts b/packages/runtime-core/src/componentSlots.ts
index 6114f6c86cf..285f1e17ce9 100644
--- a/packages/runtime-core/src/componentSlots.ts
+++ b/packages/runtime-core/src/componentSlots.ts
@@ -180,7 +180,7 @@ const assignSlots = (
     // when rendering the optimized slots by manually written render function,
     // do not copy the `slots._` compiler flag so that `renderSlot` creates
     // slot Fragment with BAIL patchFlag to force full updates
-    if (optimized || !isInternalKey(key)) {
+    if (optimized || (key !== '_' && key !== '__')) {
       slots[key] = children[key]
     }
   }