From 2ab8c41a1a43952fb229587a9da48d9a1214ab9e Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Fri, 27 Nov 2020 14:35:38 -0500
Subject: [PATCH] fix(slots): dynamically named slots should be keyed by name

fix #2535
---
 packages/runtime-core/src/helpers/renderSlot.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/runtime-core/src/helpers/renderSlot.ts b/packages/runtime-core/src/helpers/renderSlot.ts
index c20b8a191dc..420c4ffc102 100644
--- a/packages/runtime-core/src/helpers/renderSlot.ts
+++ b/packages/runtime-core/src/helpers/renderSlot.ts
@@ -47,7 +47,7 @@ export function renderSlot(
   const validSlotContent = slot && ensureValidVNode(slot(props))
   const rendered = createBlock(
     Fragment,
-    { key: props.key },
+    { key: props.key || `_${name}` },
     validSlotContent || (fallback ? fallback() : []),
     validSlotContent && (slots as RawSlots)._ === SlotFlags.STABLE
       ? PatchFlags.STABLE_FRAGMENT