diff --git a/.vscode/settings.json b/.vscode/settings.json
index a1b2021e..704663b1 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -118,5 +118,5 @@
   "i18n-ally.enabledParsers": ["ts"],
   "i18n-ally.sourceLanguage": "en",
   "i18n-ally.enabledFrameworks": ["vue", "react"],
-  "cSpell.words": ["vben", "windi", "browserslist", "esnext", "antv", "tinymce", "qrcode"]
+  "cSpell.words": ["vben", "windi", "browserslist", "esnext", "antv", "tinymce", "qrcode", "sider"]
 }
diff --git a/CHANGELOG.zh_CN.md b/CHANGELOG.zh_CN.md
index 55830819..264ff9bb 100644
--- a/CHANGELOG.zh_CN.md
+++ b/CHANGELOG.zh_CN.md
@@ -27,6 +27,7 @@
 - **FlowChart** 修复拖放菜单丢失
 - 修复后台模式下，Iframe 路由错误
 - **PageWrapper** 修复 footer 与全局页脚同时开启时的高度计算问题
+- **Menu** 修复菜单折叠动画抖动问题
 
 ## 2.4.2(2021-06-10)
 
diff --git a/src/components/SimpleMenu/src/components/SubMenuItem.vue b/src/components/SimpleMenu/src/components/SubMenuItem.vue
index 0c5dd9a1..25aff2ad 100644
--- a/src/components/SimpleMenu/src/components/SubMenuItem.vue
+++ b/src/components/SimpleMenu/src/components/SubMenuItem.vue
@@ -273,8 +273,7 @@
               state.opened = data;
               return;
             }
-
-            if (isObject(data)) {
+            if (isObject(data) && rootProps.accordion) {
               const { opend, parent, uidList } = data as Recordable;
               if (parent === instance?.parent) {
                 state.opened = opend;
diff --git a/src/views/demo/feat/ws/index.vue b/src/views/demo/feat/ws/index.vue
index 2a4e17f3..31deafd3 100644
--- a/src/views/demo/feat/ws/index.vue
+++ b/src/views/demo/feat/ws/index.vue
@@ -55,12 +55,10 @@
 <script lang="ts">
   import { defineComponent, reactive, watchEffect, computed, toRefs } from 'vue';
   import { Tag, Input } from 'ant-design-vue';
-
   import { PageWrapper } from '/@/components/Page';
-
   import { useWebSocket } from '@vueuse/core';
-
   import { formatToDateTime } from '/@/utils/dateUtil';
+
   export default defineComponent({
     components: {
       PageWrapper,
@@ -76,7 +74,7 @@
       });
 
       const { status, data, send, close, open } = useWebSocket(state.server, {
-        autoReconnect: true,
+        autoReconnect: false,
         heartbeat: true,
       });