fix bugs

frontend/src/hooks/useGameFilter.ts

@@ -17,6 +17,12 @@ export function useGameFilter(
   const [fetchedTitles, setFetchedTitles] = useState<string[]>([]);
   const metaDataRef = useRef<{ [key: string]: GameProto }>({});
 
+  useEffect(() => {
+    return () => {
+      metaDataRef.current = {};
+    };
+  }, []);
+
   const { gameToNegative, gameToPositiveOpinion } = useMemo(() => {
     const gameToNegative = new Map<string, Set<string>>();
     const gameToPositiveOpinion = new Map<string, Set<string>>();
@@ -108,7 +114,7 @@ export function useGameFilter(
 
   const gamesMap = useMemo(() => {
     return new Map(Object.entries(metaDataRef.current));
-  }, [fetchedTitles]);
+  }, []);
 
   return { filteredGames, gameToPositive: gameToPositiveOpinion, games: gamesMap };
 }