frontend/src/pages/theatres/TheatreDetailPage.tsx

@@ -340,7 +340,7 @@ const TheatreDetailPage: FC<Props> = ({ user }: Props) => {
 
 	if (!(cancelled) && newComments.length > 0)
 	  {
-	    lastCommentNoRef.current = newComments[newComments.length - 1].no
+	    lastCommentNoRef.current = newComments[0].no
 	    setComments (prev => [...newComments, ...prev])
 	  }