diff --git a/src/components/base/base-search-box.tsx b/src/components/base/base-search-box.tsx
index bd2da35aa..0eecc792b 100644
--- a/src/components/base/base-search-box.tsx
+++ b/src/components/base/base-search-box.tsx
@@ -86,7 +86,15 @@ export const BaseSearchBox = ({
 }: SearchProps) => {
   const { t } = useTranslation()
   const onSearchRef = useRef(onSearch)
-  const lastSearchStateRef = useRef<SearchState | null>(null)
+  // 用初始状态初始化，使挂载时的 emitSearch 因状态相同而被跳过，
+  // 从而只在输入内容真正变化时才触发 onSearch（也可避免 StrictMode 下的重复调用）。
+  const lastSearchStateRef = useRef<SearchState | null>({
+    text: value ?? defaultValue ?? '',
+    matchCase: searchState?.matchCase ?? defaultMatchCase,
+    matchWholeWord: searchState?.matchWholeWord ?? defaultMatchWholeWord,
+    useRegularExpression:
+      searchState?.useRegularExpression ?? defaultUseRegularExpression,
+  })
 
   const [text, setText] = useControllableState<string>({
     controlled: value,
diff --git a/src/components/base/sticky-virtual-list.tsx b/src/components/base/sticky-virtual-list.tsx
index 8ccebd078..f65a2a8b3 100644
--- a/src/components/base/sticky-virtual-list.tsx
+++ b/src/components/base/sticky-virtual-list.tsx
@@ -279,10 +279,7 @@ export const StickyVirtualList = forwardRef(function StickyVirtualListInner<
                 transform: `translateY(${virtualRow.start}px)`,
                 width: '100%',
                 zIndex: 1,
-                ...(isGroup && {
-                  opacity: 0,
-                  zIndex: -10,
-                }),
+                ...(isGroup && { visibility: 'hidden' }),
               }}
             >
               {isGroup
diff --git a/src/components/proxy/proxy-group-tools.tsx b/src/components/proxy/proxy-group-tools.tsx
index ea30352af..fa39b2770 100644
--- a/src/components/proxy/proxy-group-tools.tsx
+++ b/src/components/proxy/proxy-group-tools.tsx
@@ -10,6 +10,7 @@ import VisibilityRounded from '@mui/icons-material/VisibilityRounded'
 import WifiTetheringOffRounded from '@mui/icons-material/WifiTetheringOffRounded'
 import WifiTetheringRounded from '@mui/icons-material/WifiTetheringRounded'
 import { Box, IconButton, type SxProps, TextField } from '@mui/material'
+import { useDebounceFn } from 'ahooks'
 import { memo, useEffect } from 'react'
 import { flushSync } from 'react-dom'
 import { useTranslation } from 'react-i18next'
@@ -17,7 +18,7 @@ import { useTranslation } from 'react-i18next'
 import { useVerge } from '@/hooks/use-verge'
 import delayManager from '@/services/delay'
 
-import { BaseSearchBox } from '../base'
+import { BaseSearchBox, type SearchState } from '../base'
 
 import type { ProxySortType } from './use-filter-sort'
 import type { HeadState } from './use-head-state'
@@ -65,36 +66,51 @@ export const ProxyGroupTools = memo(function ProxyGroupTools(props: Props) {
     delayManager.setUrl(groupName, testUrl?.trim() || url || defaultLatencyUrl)
   }, [groupName, testUrl, defaultLatencyUrl, url])
 
+  // 过滤输入是高频操作，且每次都会触发整组代理的重新过滤/排序与虚拟列表重渲染，
+  // 因此对写入 headState 的动作做防抖，避免每输入一个字符就过滤一次。
+  const { run: applyFilter, flush: flushFilter } = useDebounceFn(
+    (state: SearchState) => {
+      onHeadState({
+        filterText: state.text,
+        filterMatchCase: state.matchCase,
+        filterMatchWholeWord: state.matchWholeWord,
+        filterUseRegularExpression: state.useRegularExpression,
+      })
+    },
+    { wait: 300 },
+  )
+
+  // 关闭过滤框或卸载时立即应用最后一次输入，避免丢失未生效的过滤条件。
+  useEffect(() => {
+    if (textState !== 'filter') flushFilter()
+  }, [textState, flushFilter])
+  useEffect(() => () => flushFilter(), [flushFilter])
+
   return (
     <Box
       sx={{
         display: 'flex',
+        justifyContent: 'end',
         alignItems: 'center',
         gap: 0.5,
+        height: 36,
+        flex: 1,
+        ml: 2,
         ...sx,
       }}
     >
       {textState === 'filter' && (
-        <Box sx={{ display: 'inline-block', width: 180 }}>
+        <Box sx={{ flex: '1 1 auto' }}>
           <BaseSearchBox
-            value={filterText}
+            defaultValue={filterText}
+            matchCase={filterMatchCase}
+            matchWholeWord={filterMatchWholeWord}
+            useRegularExpression={filterUseRegularExpression}
             onClick={(e) => {
               e.preventDefault()
               e.stopPropagation()
             }}
-            searchState={{
-              matchCase: filterMatchCase,
-              matchWholeWord: filterMatchWholeWord,
-              useRegularExpression: filterUseRegularExpression,
-            }}
-            onSearch={(_, state) =>
-              onHeadState({
-                filterText: state.text,
-                filterMatchCase: state.matchCase,
-                filterMatchWholeWord: state.matchWholeWord,
-                filterUseRegularExpression: state.useRegularExpression,
-              })
-            }
+            onSearch={(_, state) => applyFilter(state)}
           />
         </Box>
       )}
@@ -113,10 +129,9 @@ export const ProxyGroupTools = memo(function ProxyGroupTools(props: Props) {
             e.stopPropagation()
           }}
           onChange={(e) => onHeadState({ testUrl: e.target.value })}
-          sx={{ width: 180, input: { py: 0.65, px: 1 } }}
+          sx={{ flex: '1 1 auto', input: { py: 0.65, px: 1 } }}
         />
       )}
-
       <IconButton
         size="small"
         color="inherit"
@@ -235,10 +250,7 @@ export const ProxyGroupTools = memo(function ProxyGroupTools(props: Props) {
           if (!headState.open)
             // eslint-disable-next-line @eslint-react/dom-no-flush-sync
             flushSync(() => onHeadState({ open: true }))
-          onHeadState({
-            textState: textState === 'filter' ? null : 'filter',
-            filterText: '',
-          })
+          onHeadState({ textState: textState === 'filter' ? null : 'filter' })
         }}
       >
         {textState === 'filter' ? (
diff --git a/src/components/proxy/proxy-groups.tsx b/src/components/proxy/proxy-groups.tsx
index af5e767a5..7c52ca09c 100644
--- a/src/components/proxy/proxy-groups.tsx
+++ b/src/components/proxy/proxy-groups.tsx
@@ -354,24 +354,56 @@ function NormalProxyGroups(props: { mode: string }) {
     saveScrollPosition,
   } = useProxyRenderState(mode, false, null)
   const renderFirstRef = useRef(true)
+  // 恢复滚动位置期间设为 true，避免程序化滚动触发的 scroll 事件把中间值写回存储
+  const isRestoringRef = useRef(false)
 
   // 目前无法使用 StickyVirtualList 的 initialOffset 值设置初始化，具体原因需排查
   // 从 localStorage 恢复滚动位置
   useLayoutEffect(() => {
     if (renderList.length === 0) return
+    if (!renderFirstRef.current) return
     const node = stickyListRef.current?.getScrollElement()
     if (!node) return
-    if (!renderFirstRef.current) return
 
     const savedPosition = getScrollPosition()
-    if (savedPosition !== undefined) {
-      node.scrollTop = savedPosition
-      if (node.scrollTop === savedPosition) {
-        renderFirstRef.current = false
-      }
-    } else {
-      // The position that hasn't been saved yet during the first render
+    // 未保存过位置或位置为 0（顶部）时无需恢复
+    if (!savedPosition) {
       renderFirstRef.current = false
+      return
+    }
+
+    // 虚拟列表初始使用预估高度，真实高度测量完成后总高度才会稳定。
+    // 尤其是过滤后节点数变少时，预估总高度常常不足以一次性滚动到目标位置，
+    // 因此跨帧重试，直到到达目标位置（或内容确实不够高）为止。
+    isRestoringRef.current = true
+    let rafId = 0
+    let attempts = 0
+    const maxAttempts = 30
+
+    const step = () => {
+      const el = stickyListRef.current?.getScrollElement()
+      if (!el) {
+        isRestoringRef.current = false
+        return
+      }
+
+      el.scrollTop = savedPosition
+      attempts += 1
+
+      const reached = Math.abs(el.scrollTop - savedPosition) <= 1
+      if (reached || attempts >= maxAttempts) {
+        renderFirstRef.current = false
+        isRestoringRef.current = false
+        return
+      }
+
+      rafId = requestAnimationFrame(step)
+    }
+
+    rafId = requestAnimationFrame(step)
+    return () => {
+      cancelAnimationFrame(rafId)
+      isRestoringRef.current = false
     }
   }, [renderList.length, getScrollPosition])
 
@@ -382,6 +414,8 @@ function NormalProxyGroups(props: { mode: string }) {
 
   const handleScroll = useCallback(
     (event: Event) => {
+      // 恢复位置过程中产生的滚动不写回存储，避免中间的钳制值覆盖真实位置
+      if (isRestoringRef.current) return
       const target = event.target as HTMLElement | null
       const nextScrollTop = target?.scrollTop ?? 0
 
@@ -496,7 +530,13 @@ function NormalProxyGroups(props: { mode: string }) {
         stickyed={stickyed}
         onLocation={handleLocation}
         onCheckAll={handleCheckAll}
-        onHeadState={onHeadState}
+        onHeadState={async (groupName, patch) => {
+          if (stickyed && patch.filterText !== undefined) {
+            handleGroupLocationByName(groupName)
+            await stickyListRef.current?.waitForScrollEnd()
+          }
+          onHeadState(groupName, patch)
+        }}
         onChangeProxy={handleChangeProxy}
         onGroupToggle={handleGroupToggle}
       />
@@ -507,6 +547,7 @@ function NormalProxyGroups(props: { mode: string }) {
       onHeadState,
       handleLocation,
       handleGroupToggle,
+      handleGroupLocationByName,
     ],
   )
 
diff --git a/src/components/proxy/proxy-render.tsx b/src/components/proxy/proxy-render.tsx
index 5b0992a03..15ffa8aa9 100644
--- a/src/components/proxy/proxy-render.tsx
+++ b/src/components/proxy/proxy-render.tsx
@@ -106,94 +106,115 @@ export const ProxyRender = memo(function ProxyRender(props: RenderProps) {
             onHeadState?.(group.name, { open: !headState?.open })
           }}
         >
-          {enable_group_icon && group.icon?.trim().startsWith('http') && (
-            <img
-              src={iconCachePath === '' ? group.icon : iconCachePath}
-              alt="group icon"
-              width="32px"
-              style={{ marginRight: '12px', borderRadius: '6px' }}
-            />
-          )}
-          {enable_group_icon && group.icon?.trim().startsWith('data') && (
-            <img
-              src={group.icon}
-              alt="group icon"
-              width="32px"
-              style={{ marginRight: '12px', borderRadius: '6px' }}
-            />
-          )}
-          {enable_group_icon && group.icon?.trim().startsWith('<svg') && (
-            <img
-              src={`data:image/svg+xml;base64,${btoa(group.icon)}`}
-              alt="group icon"
-              width="32px"
-            />
-          )}
-          <ListItemText
-            primary={<StyledPrimary>{group.name}</StyledPrimary>}
-            secondary={
+          <Box sx={{ width: '100%' }}>
+            <Box sx={{ display: 'flex', alignItems: 'center', width: '100%' }}>
+              {enable_group_icon && group.icon?.trim().startsWith('http') && (
+                <img
+                  src={iconCachePath === '' ? group.icon : iconCachePath}
+                  alt="group icon"
+                  width="32px"
+                  style={{ marginRight: '12px', borderRadius: '6px' }}
+                />
+              )}
+              {enable_group_icon && group.icon?.trim().startsWith('data') && (
+                <img
+                  src={group.icon}
+                  alt="group icon"
+                  width="32px"
+                  style={{ marginRight: '12px', borderRadius: '6px' }}
+                />
+              )}
+              {enable_group_icon && group.icon?.trim().startsWith('<svg') && (
+                <img
+                  src={`data:image/svg+xml;base64,${btoa(group.icon)}`}
+                  alt="group icon"
+                  width="32px"
+                />
+              )}
+              <ListItemText
+                sx={{ flex: '0 1 auto', minWidth: 0 }}
+                primary={<StyledPrimary>{group.name}</StyledPrimary>}
+                secondary={
+                  <Box
+                    sx={{
+                      display: 'flex',
+                      alignItems: 'center',
+                      pt: '2px',
+                      overflow: 'hidden',
+                      whiteSpace: 'nowrap',
+                    }}
+                  >
+                    <Box
+                      component="span"
+                      sx={{
+                        marginTop: '2px',
+                        overflow: 'hidden',
+                        textOverflow: 'ellipsis',
+                      }}
+                    >
+                      <StyledTypeBox>{group.type}</StyledTypeBox>
+                      <StyledSubtitle sx={{ color: 'text.secondary' }}>
+                        {group.now}
+                      </StyledSubtitle>
+                    </Box>
+                  </Box>
+                }
+                slotProps={{
+                  secondary: {
+                    component: 'div',
+                    sx: {
+                      display: 'flex',
+                      alignItems: 'center',
+                      color: '#ccc',
+                    },
+                  },
+                }}
+              />
               <Box
                 sx={{
                   display: 'flex',
                   alignItems: 'center',
-                  pt: '2px',
-                  overflow: 'hidden',
-                  whiteSpace: 'nowrap',
-                }}
-              >
-                <Box
-                  component="span"
-                  sx={{
-                    marginTop: '2px',
-                    overflow: 'hidden',
-                    textOverflow: 'ellipsis',
-                  }}
-                >
-                  <StyledTypeBox>{group.type}</StyledTypeBox>
-                  <StyledSubtitle sx={{ color: 'text.secondary' }}>
-                    {group.now}
-                  </StyledSubtitle>
-                </Box>
-              </Box>
-            }
-            slotProps={{
-              secondary: {
-                component: 'div',
-                sx: { display: 'flex', alignItems: 'center', color: '#ccc' },
-              },
-            }}
-          />
-          <Box sx={{ display: 'flex', alignItems: 'center' }}>
-            <ProxyGroupTools
-              url={group.testUrl}
-              groupName={group.name}
-              headState={headState!}
-              onLocation={() => onLocation(group)}
-              onCheckDelay={() => onCheckAll(group.name)}
-              onHeadState={(p) => onHeadState(group.name, p)}
-            />
-            <Tooltip title={t('proxies.page.labels.proxyCount')} arrow>
-              <div
-                style={{
-                  minWidth: '50px',
-                  display: 'flex',
                   justifyContent: 'end',
-                  alignItems: 'center',
+                  flex: '1 1 auto',
+                  minWidth: 0,
                 }}
               >
-                <Chip
-                  size="small"
-                  label={`${group.all.length}`}
-                  sx={{
-                    mr: 1,
-                    backgroundColor: (theme) =>
-                      alpha(theme.palette.primary.main, 0.1),
-                    color: (theme) => theme.palette.primary.main,
-                  }}
+                <ProxyGroupTools
+                  url={group.testUrl}
+                  groupName={group.name}
+                  headState={headState!}
+                  onLocation={() => onLocation(group)}
+                  onCheckDelay={() => onCheckAll(group.name)}
+                  onHeadState={(p) => onHeadState(group.name, p)}
                 />
-              </div>
-            </Tooltip>
-            {headState?.open ? <ExpandLessRounded /> : <ExpandMoreRounded />}
+                <Tooltip title={t('proxies.page.labels.proxyCount')} arrow>
+                  <div
+                    style={{
+                      minWidth: '50px',
+                      display: 'flex',
+                      justifyContent: 'end',
+                      alignItems: 'center',
+                    }}
+                  >
+                    <Chip
+                      size="small"
+                      label={`${group.all.length}`}
+                      sx={{
+                        mr: 1,
+                        backgroundColor: (theme) =>
+                          alpha(theme.palette.primary.main, 0.1),
+                        color: (theme) => theme.palette.primary.main,
+                      }}
+                    />
+                  </div>
+                </Tooltip>
+                {headState?.open ? (
+                  <ExpandLessRounded />
+                ) : (
+                  <ExpandMoreRounded />
+                )}
+              </Box>
+            </Box>
           </Box>
         </ListItemButton>
       </div>