diff --git a/frontend/src/pages/posts/PostDetailPage.tsx b/frontend/src/pages/posts/PostDetailPage.tsx
index 175d883..4bee984 100644
--- a/frontend/src/pages/posts/PostDetailPage.tsx
+++ b/frontend/src/pages/posts/PostDetailPage.tsx
@@ -2,7 +2,7 @@ import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
 import { motion } from 'framer-motion'
 import { useEffect, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { useLocation, useParams } from 'react-router-dom'
+import { useParams } from 'react-router-dom'
 
 import PostEditForm from '@/components/PostEditForm'
 import PostEmbed from '@/components/PostEmbed'
@@ -31,11 +31,6 @@ export default (({ user }: Props) => {
   const postId = String (id ?? '')
   const postKey = postsKeys.show (postId)
 
-  const location = useLocation ()
-  const navState = (location.state ?? { }) as { sharedId?: string }
-
-  const inboundSharedId = navState.sharedId
-
   const { data: post, isError: errorFlg, error } = useQuery ({
       enabled:  Boolean (id),
       queryKey: postKey,
@@ -112,15 +107,15 @@ export default (({ user }: Props) => {
 	    {post
 	     ? (
 		<>
-		  {inboundSharedId === `page-${ id }` && (
+		  {(post.thumbnail || post.thumbnailBase) && (
 		      <motion.div
-			  layoutId={inboundSharedId}
+			  layoutId={`page-${ id }`}
 			  className="absolute top-4 left-4 w-[min(640px,calc(100vw-2rem))] h-[360px]
 				     overflow-hidden rounded-xl pointer-events-none z-50"
 			  initial={{ opacity: 1 }}
 			  animate={{ opacity: 0 }}
 			  transition={{ duration: .2, ease: 'easeOut' }}>
-			<img src={post.thumbnail || post.thumbnailBase || undefined}
+			<img src={post.thumbnail || post.thumbnailBase}
 			     alt={post.title || post.url}
 			     title={post.title || post.url || undefined}
 			     className="object-cover w-full h-full"/>
diff --git a/frontend/src/pages/posts/PostListPage.tsx b/frontend/src/pages/posts/PostListPage.tsx
index 1440985..8dc20d6 100644
--- a/frontend/src/pages/posts/PostListPage.tsx
+++ b/frontend/src/pages/posts/PostListPage.tsx
@@ -15,10 +15,12 @@ import { fetchPosts } from '@/lib/posts'
 import { postsKeys } from '@/lib/queryKeys'
 import { fetchWikiPageByTitle } from '@/lib/wiki'
 
+import type { FC } from 'react'
+
 import type { WikiPage } from '@/types'
 
 
-export default () => {
+export default (() => {
   const containerRef = useRef<HTMLDivElement | null> (null)
 
   const [wikiPage, setWikiPage] = useState<WikiPage | null> (null)
@@ -41,21 +43,24 @@ export default () => {
   const totalPages = data ? Math.ceil (data.count / limit) : 0
 
   useLayoutEffect (() => {
+    scroll (0, 0)
+
     setWikiPage (null)
-    if (tags.length === 1)
+
+    if (tags.length !== 1)
+      return
+
+    void (async () => {
+      try
+      {
+	const tagName = tags[0]
+	setWikiPage (await fetchWikiPageByTitle (tagName, { }))
+      }
+      catch
       {
-	void (async () => {
-	  try
-	  {
-	    const tagName = tags[0]
-	    setWikiPage (await fetchWikiPageByTitle (tagName, { }))
-	  }
-	  catch
-	  {
-	    ;
-	  }
-	}) ()
+	;
       }
+    }) ()
   }, [location.search])
 
   return (
@@ -100,4 +105,4 @@ export default () => {
 	  </TabGroup>
 	</MainArea>
       </div>)
-}
+}) satisfies FC