fix：常见问题

src/pages/Home/components/QuestionList/QuestionList.tsx

@@ -131,6 +131,9 @@ const QuestionListBase: React.FC<QuestionListProps & WithAuthProps> = ({
     updateDisplayedItems()
     updateDisplayedItems()
   }, [updateDisplayedItems])
   }, [updateDisplayedItems])
 
 
+  // 当上游将 questions 清空时，立即清空展示项，避免短暂显示旧数据
+  const itemsToRender = questions.length === 0 ? [] : displayedItems
+
   return (
   return (
     <div
     <div
       className="bg-white box-border px-[20px] py-[12px] w-full sm:w-[300px] md:w-[300px]"
       className="bg-white box-border px-[20px] py-[12px] w-full sm:w-[300px] md:w-[300px]"
@@ -180,7 +183,7 @@ const QuestionListBase: React.FC<QuestionListProps & WithAuthProps> = ({
           animate="visible"
           animate="visible"
           className="mt-[8px] flex flex-col gap-[8px] w-full"
           className="mt-[8px] flex flex-col gap-[8px] w-full"
         >
         >
-          {displayedItems.map((item, index) => (
+          {itemsToRender.map((item, index) => (
             <motion.li
             <motion.li
               key={`question-${item}`}
               key={`question-${item}`}
               custom={index}
               custom={index}