fix: do not reset listing window when item list changes

src/components/posts/Post.jsx

@@ -338,4 +338,4 @@ const Post = ({
   );
 };
 
-export default Post;
+export default React.memo(Post);

src/components/posts/PostList.jsx

-import React, { useCallback, useEffect, useMemo, useState } from "react";
+import React, { useCallback, useMemo, useState } from "react";
 import classNames from "classnames";
 
 import Post from "./Post";
@@ -50,11 +50,6 @@ const PostList = ({
     onRejectProcedureProposalByChairman
   );
 
-  // Reset window when items change (possibly due to filtering).
-  useEffect(() => {
-    setWindow(windowSize);
-  }, [items, setWindow]);
-
   const onPostSeen = useCallback(
     (post) => () => {
       if (!post.seen) {