diff --git a/demo/documentation/components/tooltip/enUS/event.demo.md b/demo/documentation/components/tooltip/enUS/event.demo.md
index cdc0951c0..bfda0ea6b 100644
--- a/demo/documentation/components/tooltip/enUS/event.demo.md
+++ b/demo/documentation/components/tooltip/enUS/event.demo.md
@@ -31,11 +31,10 @@
 <n-tooltip
   :show="showPopover"
   placement="bottom"
-  @update:show="handleUpdateShow"
 >
   <template v-slot:trigger>
     <n-button @click="showPopover = !showPopover">
-      Manual
+      Manual (No event will be emitted)
     </n-button>
   </template>
   <span>
diff --git a/demo/documentation/components/tooltip/zhCN/event.demo.md b/demo/documentation/components/tooltip/zhCN/event.demo.md
index c87f3749e..17a9621b2 100644
--- a/demo/documentation/components/tooltip/zhCN/event.demo.md
+++ b/demo/documentation/components/tooltip/zhCN/event.demo.md
@@ -31,11 +31,10 @@
 <n-tooltip
   :show="showPopover"
   placement="bottom"
-  @update:show="handleUpdateShow"
 >
   <template v-slot:trigger>
     <n-button @click="showPopover = !showPopover">
-      手动
+      手动（不会有事件发出来）
     </n-button>
   </template>
   <span>
diff --git a/src/_utils/vue/src/render.js b/src/_utils/vue/src/render.js
index 119f56195..c926c4965 100644
--- a/src/_utils/vue/src/render.js
+++ b/src/_utils/vue/src/render.js
@@ -16,7 +16,7 @@ export const render = {
     } else if (typeof render === 'number') {
       return createTextVNode(String(render))
     } else {
-      return null
+      return JSON.stringify(render)
     }
   }
 }
diff --git a/src/button/src/styles/themed-base.cssr.js b/src/button/src/styles/themed-base.cssr.js
index e4b9b7d72..71c96c908 100644
--- a/src/button/src/styles/themed-base.cssr.js
+++ b/src/button/src/styles/themed-base.cssr.js
@@ -92,9 +92,7 @@ export default c([
             left: 0,
             top: '50%',
             transform: 'translateY(-50%)',
-            display: 'block',
-            fill: 'currentColor',
-            stroke: 'currentColor'
+            display: 'block'
           }, [
             iconSwitchTransition({
               top: '50%',