diff --git a/components/_util/getDataOrAriaProps.ts b/components/_util/getDataOrAriaProps.ts
index ee4e271ec6..1984714db6 100644
--- a/components/_util/getDataOrAriaProps.ts
+++ b/components/_util/getDataOrAriaProps.ts
@@ -1,8 +1,8 @@
 export default function getDataOrAriaProps(props: any) {
   return Object.keys(props).reduce((prev: any, key: string) => {
     if (
-      (key.substr(0, 5) === 'data-' || key.substr(0, 5) === 'aria-' || key === 'role') &&
-      key.substr(0, 7) !== 'data-__'
+      (key.startsWith('data-') || key.startsWith('aria-') || key === 'role') &&
+      !key.startsWith('data-__')
     ) {
       prev[key] = props[key];
     }
diff --git a/components/config-provider/__tests__/__snapshots__/components.test.js.snap b/components/config-provider/__tests__/__snapshots__/components.test.js.snap
index 7d4b3db0fa..487d7e9a69 100644
--- a/components/config-provider/__tests__/__snapshots__/components.test.js.snap
+++ b/components/config-provider/__tests__/__snapshots__/components.test.js.snap
@@ -21043,6 +21043,7 @@ exports[`ConfigProvider components Select configProvider 1`] = `
               >
                 <div
                   class="config-select-item config-select-item-group"
+                  title="grp"
                 >
                   grp
                 </div>
@@ -21170,6 +21171,7 @@ exports[`ConfigProvider components Select configProvider componentSize large 1`]
               >
                 <div
                   class="config-select-item config-select-item-group"
+                  title="grp"
                 >
                   grp
                 </div>
@@ -21297,6 +21299,7 @@ exports[`ConfigProvider components Select configProvider componentSize middle 1`
               >
                 <div
                   class="config-select-item config-select-item-group"
+                  title="grp"
                 >
                   grp
                 </div>
@@ -21424,6 +21427,7 @@ exports[`ConfigProvider components Select configProvider virtual and dropdownMat
               >
                 <div
                   class="ant-select-item ant-select-item-group"
+                  title="grp"
                 >
                   grp
                 </div>
@@ -21551,6 +21555,7 @@ exports[`ConfigProvider components Select normal 1`] = `
               >
                 <div
                   class="ant-select-item ant-select-item-group"
+                  title="grp"
                 >
                   grp
                 </div>
@@ -21678,6 +21683,7 @@ exports[`ConfigProvider components Select prefixCls 1`] = `
               >
                 <div
                   class="prefix-Select-item prefix-Select-item-group"
+                  title="grp"
                 >
                   grp
                 </div>
diff --git a/components/select/__tests__/__snapshots__/demo-extend.test.ts.snap b/components/select/__tests__/__snapshots__/demo-extend.test.ts.snap
index 466c0ddbb7..828b8fa6b0 100644
--- a/components/select/__tests__/__snapshots__/demo-extend.test.ts.snap
+++ b/components/select/__tests__/__snapshots__/demo-extend.test.ts.snap
@@ -3815,6 +3815,7 @@ exports[`renders ./components/select/demo/optgroup.md extend context correctly 1
               >
                 <div
                   class="ant-select-item ant-select-item-group"
+                  title="Manager"
                 >
                   Manager
                 </div>
@@ -3854,6 +3855,7 @@ exports[`renders ./components/select/demo/optgroup.md extend context correctly 1
                 </div>
                 <div
                   class="ant-select-item ant-select-item-group"
+                  title="Engineer"
                 >
                   Engineer
                 </div>
diff --git a/components/select/demo/custom-dropdown-menu.md b/components/select/demo/custom-dropdown-menu.md
index e0ed7a91be..3b8e6e9ea8 100644
--- a/components/select/demo/custom-dropdown-menu.md
+++ b/components/select/demo/custom-dropdown-menu.md
@@ -7,11 +7,11 @@ title:
 
 ## zh-CN
 
-使用 `dropdownRender` 对下拉菜单进行自由扩展。
+使用 `dropdownRender` 对下拉菜单进行自由扩展。自定义内容点击时会关闭浮层，如果不喜欢关闭，可以添加 `onMouseDown={e => e.preventDefault()}` 进行阻止（更多详情见 [#13448](https://github.com/ant-design/ant-design/issues/13448)）。
 
 ## en-US
 
-Customize the dropdown menu via `dropdownRender`.
+Customize the dropdown menu via `dropdownRender`. Dropdown menu will be closed if click `dropdownRender` area, you can prevent it by wrapping `onMouseDown={e => e.preventDefault()}` (see more at [#13448](https://github.com/ant-design/ant-design/issues/13448)).
 
 ```jsx
 import React, { useState } from 'react';
diff --git a/components/select/index.en-US.md b/components/select/index.en-US.md
index 71961722a0..5638cf67d0 100644
--- a/components/select/index.en-US.md
+++ b/components/select/index.en-US.md
@@ -113,7 +113,7 @@ It's caused by option with different `label` and `value`. You can use `optionFil
 
 ### The dropdown is closed when click `dropdownRender` area?
 
-See the instruction in [dropdownRender example](#components-select-demo-custom-dropdown-menu).
+Dropdown menu will be closed if click `dropdownRender` area, you can prevent it by wrapping `onMouseDown={e => e.preventDefault()}` (see more at [#13448](https://github.com/ant-design/ant-design/issues/13448)).
 
 ### Why sometime customize Option cause scroll break?
 
diff --git a/components/select/index.zh-CN.md b/components/select/index.zh-CN.md
index a441cf1297..91cb942bf1 100644
--- a/components/select/index.zh-CN.md
+++ b/components/select/index.zh-CN.md
@@ -114,7 +114,7 @@ cover: https://gw.alipayobjects.com/zos/alicdn/_0XzgOis7/Select.svg
 
 ### 点击 `dropdownRender` 里的内容浮层关闭怎么办？
 
-看下 [dropdownRender 例子](#components-select-demo-custom-dropdown-menu) 里的说明。
+自定义内容点击时会关闭浮层，如果不喜欢关闭，可以添加 `onMouseDown={e => e.preventDefault()}` 进行阻止（更多详情见 [#13448](https://github.com/ant-design/ant-design/issues/13448)）。
 
 ### 自定义 Option 样式导致滚动异常怎么办？
 
diff --git a/components/tree/demo/search.md b/components/tree/demo/search.md
index df8151d567..180e8cc483 100644
--- a/components/tree/demo/search.md
+++ b/components/tree/demo/search.md
@@ -110,8 +110,8 @@ class SearchTree extends React.Component {
     const loop = data =>
       data.map(item => {
         const index = item.title.indexOf(searchValue);
-        const beforeStr = item.title.substr(0, index);
-        const afterStr = item.title.substr(index + searchValue.length);
+        const beforeStr = item.title.substring(0, index);
+        const afterStr = item.title.slice(index + searchValue.length);
         const title =
           index > -1 ? (
             <span>
diff --git a/components/upload/demo/file-type.md b/components/upload/demo/file-type.md
index 5ec7214cf1..4cae73ee9e 100644
--- a/components/upload/demo/file-type.md
+++ b/components/upload/demo/file-type.md
@@ -102,7 +102,7 @@ class PicturesWall extends React.Component {
         icon = <LoadingOutlined />; // or icon = 'uploading...';
       } else {
         fileSufIconList.forEach(item => {
-          if (item.suf.includes(file.name.substr(file.name.lastIndexOf('.')))) {
+          if (item.suf.includes(file.name.slice(file.name.lastIndexOf('.')))) {
             icon = item.type;
           }
         });
diff --git a/site/theme/template/Layout/Header/index.tsx b/site/theme/template/Layout/Header/index.tsx
index 05942539a4..6b7fe8a183 100644
--- a/site/theme/template/Layout/Header/index.tsx
+++ b/site/theme/template/Layout/Header/index.tsx
@@ -192,7 +192,7 @@ class Header extends React.Component<HeaderProps, HeaderState> {
       location: { pathname, query },
     } = this.props;
     const currentProtocol = `${window.location.protocol}//`;
-    const currentHref = window.location.href.substr(currentProtocol.length);
+    const currentHref = window.location.href.slice(currentProtocol.length);
 
     if (utils.isLocalStorageNameSupported()) {
       localStorage.setItem('locale', utils.isZhCN(pathname) ? 'en-US' : 'zh-CN');