diff --git a/.dumi/theme/builtins/ComponentOverview/index.tsx b/.dumi/theme/builtins/ComponentOverview/index.tsx
index 49cb8f1369..308ed135c5 100644
--- a/.dumi/theme/builtins/ComponentOverview/index.tsx
+++ b/.dumi/theme/builtins/ComponentOverview/index.tsx
@@ -1,8 +1,9 @@
-import React, { memo, useMemo, useState } from 'react';
+import React, { memo, useMemo, useRef, useState } from 'react';
+import type { CSSProperties } from 'react';
 import { Link, useIntl, useSidebarData, useLocation } from 'dumi';
 import { css } from '@emotion/react';
 import debounce from 'lodash/debounce';
-import { Card, Col, Divider, Input, Row, Space, Tag, Typography } from 'antd';
+import { Card, Col, Divider, Input, Row, Space, Tag, Typography, Affix } from 'antd';
 import { SearchOutlined } from '@ant-design/icons';
 import type { Component } from './ProComponentsList';
 import proComponentsList from './ProComponentsList';
@@ -10,7 +11,6 @@ import useSiteToken from '../../../hooks/useSiteToken';
 
 const useStyle = () => {
   const { token } = useSiteToken();
-
   return {
     componentsOverviewGroupTitle: css`
       margin-bottom: 24px !important;
@@ -33,22 +33,25 @@ const useStyle = () => {
         box-shadow: 0 6px 16px -8px #00000014, 0 9px 28px #0000000d, 0 12px 48px 16px #00000008;
       }
     `,
+    componentsOverviewAffix: css`
+      display: flex;
+      transition: all 0.3s;
+      justify-content: space-between;
+    `,
     componentsOverviewSearch: css`
-      font-size: ${token.fontSizeXL}px;
       padding: 0;
-
       .anticon-search {
         color: ${token.colorTextDisabled};
       }
     `,
     componentsOverviewContent: css`
       &:empty:after {
-        content: 'Not Found';
-        text-align: center;
-        padding: 16px 0 40px;
         display: block;
+        padding: 16px 0 40px;
         color: ${token.colorTextDisabled};
+        text-align: center;
         border-bottom: 1px solid ${token.colorSplit};
+        content: 'Not Found';
       }
     `,
   };
@@ -76,13 +79,27 @@ const { Title } = Typography;
 
 const Overview: React.FC = () => {
   const style = useStyle();
+
   const data = useSidebarData();
+  const [searchBarAffixed, setSearchBarAffixed] = useState<boolean>(false);
+
+  const { token } = useSiteToken();
+  const { borderRadius, colorBgContainer, fontSizeXL } = token;
+
+  const affixedStyle: CSSProperties = {
+    boxShadow: 'rgba(50, 50, 93, 0.25) 0 6px 12px -2px, rgba(0, 0, 0, 0.3) 0 3px 7px -3px',
+    padding: 8,
+    margin: -8,
+    borderRadius,
+    backgroundColor: colorBgContainer,
+  };
+
   const { search: urlSearch } = useLocation();
   const { locale, formatMessage } = useIntl();
 
   const [search, setSearch] = useState<string>('');
 
-  const sectionRef = React.useRef<HTMLElement>(null);
+  const sectionRef = useRef<HTMLElement>(null);
 
   const onKeyDown: React.KeyboardEventHandler<HTMLInputElement> = (event) => {
     if (event.keyCode === 13 && search.trim().length) {
@@ -114,23 +131,27 @@ const Overview: React.FC = () => {
         ]),
     [data, locale],
   );
-
   return (
     <section className="markdown" ref={sectionRef}>
       <Divider />
-      <Input
-        value={search}
-        placeholder={formatMessage({ id: 'app.components.overview.search' })}
-        css={style.componentsOverviewSearch}
-        onChange={(e) => {
-          setSearch(e.target.value);
-          reportSearch(e.target.value);
-        }}
-        onKeyDown={onKeyDown}
-        bordered={false}
-        autoFocus
-        suffix={<SearchOutlined />}
-      />
+      <Affix offsetTop={24} onChange={setSearchBarAffixed}>
+        <div css={style.componentsOverviewAffix} style={searchBarAffixed ? affixedStyle : {}}>
+          <Input
+            autoFocus
+            value={search}
+            placeholder={formatMessage({ id: 'app.components.overview.search' })}
+            css={style.componentsOverviewSearch}
+            onChange={(e) => {
+              setSearch(e.target.value);
+              reportSearch(e.target.value);
+            }}
+            onKeyDown={onKeyDown}
+            bordered={false}
+            suffix={<SearchOutlined />}
+            style={{ fontSize: searchBarAffixed ? fontSizeXL - 2 : fontSizeXL }}
+          />
+        </div>
+      </Affix>
       <Divider />
       <div css={style.componentsOverviewContent}>
         {groups
diff --git a/.dumi/theme/builtins/IconSearch/index.tsx b/.dumi/theme/builtins/IconSearch/index.tsx
index 96a1da38c1..0dc425a380 100644
--- a/.dumi/theme/builtins/IconSearch/index.tsx
+++ b/.dumi/theme/builtins/IconSearch/index.tsx
@@ -1,6 +1,10 @@
-import * as React from 'react';
+import React, { useCallback, useMemo, useState } from 'react';
+import type { CSSProperties } from 'react';
 import Icon, * as AntdIcons from '@ant-design/icons';
+import type { SegmentedProps } from 'antd';
+import type { IntlShape } from 'react-intl';
 import { Segmented, Input, Empty, Affix } from 'antd';
+import { css } from '@emotion/react';
 import { useIntl } from 'dumi';
 import debounce from 'lodash/debounce';
 import Category from './Category';
@@ -17,6 +21,32 @@ export enum ThemeType {
 
 const allIcons: { [key: string]: any } = AntdIcons;
 
+const useStyle = () => ({
+  iconSearchAffix: css`
+    display: flex;
+    transition: all 0.3s;
+    justify-content: space-between;
+  `,
+});
+
+const options = (intl: IntlShape): SegmentedProps['options'] => [
+  {
+    value: ThemeType.Outlined,
+    icon: <Icon component={OutlinedIcon} />,
+    label: intl.formatMessage({ id: 'app.docs.components.icon.outlined' }),
+  },
+  {
+    value: ThemeType.Filled,
+    icon: <Icon component={FilledIcon} />,
+    label: intl.formatMessage({ id: 'app.docs.components.icon.filled' }),
+  },
+  {
+    value: ThemeType.TwoTone,
+    icon: <Icon component={TwoToneIcon} />,
+    label: intl.formatMessage({ id: 'app.docs.components.icon.two-tone' }),
+  },
+];
+
 interface IconSearchState {
   theme: ThemeType;
   searchKey: string;
@@ -24,25 +54,23 @@ interface IconSearchState {
 
 const IconSearch: React.FC = () => {
   const intl = useIntl();
-  const [displayState, setDisplayState] = React.useState<IconSearchState>({
-    theme: ThemeType.Outlined,
+  const { iconSearchAffix } = useStyle();
+  const [displayState, setDisplayState] = useState<IconSearchState>({
     searchKey: '',
+    theme: ThemeType.Outlined,
   });
 
   const newIconNames: string[] = [];
 
-  const handleSearchIcon = React.useCallback(
-    debounce((searchKey: string) => {
-      setDisplayState((prevState) => ({ ...prevState, searchKey }));
-    }),
-    [],
-  );
+  const handleSearchIcon = debounce((e: React.ChangeEvent<HTMLInputElement>) => {
+    setDisplayState((prevState) => ({ ...prevState, searchKey: e.target.value }));
+  }, 300);
 
-  const handleChangeTheme = React.useCallback((value) => {
+  const handleChangeTheme = useCallback((value) => {
     setDisplayState((prevState) => ({ ...prevState, theme: value as ThemeType }));
   }, []);
 
-  const renderCategories = React.useMemo<React.ReactNode | React.ReactNode[]>(() => {
+  const renderCategories = useMemo<React.ReactNode | React.ReactNode[]>(() => {
     const { searchKey = '', theme } = displayState;
 
     const categoriesResult = Object.keys(categories)
@@ -77,62 +105,38 @@ const IconSearch: React.FC = () => {
           newIcons={newIconNames}
         />
       ));
-    return categoriesResult.length === 0 ? <Empty style={{ margin: '2em 0' }} /> : categoriesResult;
+    return categoriesResult.length ? categoriesResult : <Empty style={{ margin: '2em 0' }} />;
   }, [displayState.searchKey, displayState.theme]);
 
-  const [searchBarAffixed, setSearchBarAffixed] = React.useState(false);
+  const [searchBarAffixed, setSearchBarAffixed] = useState<boolean>(false);
   const { token } = useSiteToken();
   const { borderRadius, colorBgContainer } = token;
-  const affixedStyle = searchBarAffixed
-    ? {
-        boxShadow: 'rgba(50, 50, 93, 0.25) 0px 6px 12px -2px, rgba(0, 0, 0, 0.3) 0px 3px 7px -3px',
-        padding: 8,
-        margin: -8,
-        borderRadius,
-        background: colorBgContainer,
-      }
-    : {};
+
+  const affixedStyle: CSSProperties = {
+    boxShadow: 'rgba(50, 50, 93, 0.25) 0 6px 12px -2px, rgba(0, 0, 0, 0.3) 0 3px 7px -3px',
+    padding: 8,
+    margin: -8,
+    borderRadius,
+    backgroundColor: colorBgContainer,
+  };
 
   return (
     <div className="markdown">
-      <Affix offsetTop={24} onChange={(affixed) => setSearchBarAffixed(affixed)}>
-        <div
-          style={{
-            display: 'flex',
-            justifyContent: 'space-between',
-            transition: 'all .3s',
-            ...affixedStyle,
-          }}
-        >
+      <Affix offsetTop={24} onChange={setSearchBarAffixed}>
+        <div css={iconSearchAffix} style={searchBarAffixed ? affixedStyle : {}}>
           <Segmented
-            value={displayState.theme}
-            onChange={handleChangeTheme}
             size="large"
-            options={[
-              {
-                icon: <Icon component={OutlinedIcon} />,
-                label: intl.formatMessage({ id: 'app.docs.components.icon.outlined' }),
-                value: ThemeType.Outlined,
-              },
-              {
-                icon: <Icon component={FilledIcon} />,
-                label: intl.formatMessage({ id: 'app.docs.components.icon.filled' }),
-                value: ThemeType.Filled,
-              },
-              {
-                icon: <Icon component={TwoToneIcon} />,
-                label: intl.formatMessage({ id: 'app.docs.components.icon.two-tone' }),
-                value: ThemeType.TwoTone,
-              },
-            ]}
+            value={displayState.theme}
+            options={options(intl)}
+            onChange={handleChangeTheme}
           />
           <Input.Search
             placeholder={intl.formatMessage({ id: 'app.docs.components.icon.search.placeholder' })}
             style={{ flex: 1, marginInlineStart: 16 }}
             allowClear
-            onChange={(e) => handleSearchIcon(e.currentTarget.value)}
-            size="large"
             autoFocus
+            size="large"
+            onChange={handleSearchIcon}
           />
         </div>
       </Affix>
diff --git a/.dumi/theme/slots/Sidebar/index.tsx b/.dumi/theme/slots/Sidebar/index.tsx
index cecd67cb9b..8d1c219dd7 100644
--- a/.dumi/theme/slots/Sidebar/index.tsx
+++ b/.dumi/theme/slots/Sidebar/index.tsx
@@ -1,6 +1,6 @@
 import React, { useContext } from 'react';
 import { useSidebarData } from 'dumi';
-import { Affix, Col, ConfigProvider, Menu } from 'antd';
+import { Col, ConfigProvider, Menu } from 'antd';
 import MobileMenu from 'rc-drawer';
 import { css } from '@emotion/react';
 import SiteContext from '../SiteContext';
@@ -107,6 +107,9 @@ const useStyle = () => {
       z-index: 1;
 
       .main-menu-inner {
+        position: sticky;
+        top: 0;
+        width: 100%;
         height: 100%;
         max-height: 100vh;
         overflow: hidden;
@@ -115,11 +118,6 @@ const useStyle = () => {
       &:hover .main-menu-inner {
         overflow-y: auto;
       }
-
-      > div,
-      > div > div {
-        height: 100%;
-      }
     `,
   };
 };
@@ -153,11 +151,7 @@ const Sidebar: React.FC = () => {
     <MobileMenu key="Mobile-menu">{menuChild}</MobileMenu>
   ) : (
     <Col xxl={4} xl={5} lg={6} md={6} sm={24} xs={24} css={styles.mainMenu}>
-      <Affix>
-        <section style={{ width: '100%' }} className="main-menu-inner">
-          {menuChild}
-        </section>
-      </Affix>
+      <section className="main-menu-inner">{menuChild}</section>
     </Col>
   );
 };
diff --git a/components/button/LoadingIcon.tsx b/components/button/LoadingIcon.tsx
index 2f361c293c..7c760147f1 100644
--- a/components/button/LoadingIcon.tsx
+++ b/components/button/LoadingIcon.tsx
@@ -7,8 +7,14 @@ export interface LoadingIconProps {
   existIcon: boolean;
   loading?: boolean | object;
 }
-const getCollapsedWidth = () => ({ width: 0, opacity: 0, transform: 'scale(0)' });
-const getRealWidth = (node: HTMLElement) => ({
+
+const getCollapsedWidth = (): React.CSSProperties => ({
+  width: 0,
+  opacity: 0,
+  transform: 'scale(0)',
+});
+
+const getRealWidth = (node: HTMLElement): React.CSSProperties => ({
   width: node.scrollWidth,
   opacity: 1,
   transform: 'scale(1)',