diff --git a/web/src/app/_components/research-block.tsx b/web/src/app/_components/research-block.tsx
index fb3507c..1f55536 100644
--- a/web/src/app/_components/research-block.tsx
+++ b/web/src/app/_components/research-block.tsx
@@ -63,6 +63,11 @@ export function ResearchBlock({
     }, 1000);
   }, [reportId]);
 
+  // When the research id changes, set the active tab to activities
+  useEffect(() => {
+    setActiveTab("activities");
+  }, [researchId]);
+
   return (
     <div className={cn("h-full w-full", className)}>
       <Card className={cn("relative h-full w-full pt-4", className)}>
diff --git a/web/src/app/_components/scroll-container.tsx b/web/src/app/_components/scroll-container.tsx
index a3a546e..ecc7d01 100644
--- a/web/src/app/_components/scroll-container.tsx
+++ b/web/src/app/_components/scroll-container.tsx
@@ -1,7 +1,7 @@
 // Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
 // SPDX-License-Identifier: MIT
 
-import { useEffect } from "react";
+import { useEffect, useRef } from "react";
 import { useStickToBottom } from "use-stick-to-bottom";
 
 import { ScrollArea } from "~/components/ui/scroll-area";
@@ -23,11 +23,18 @@ export function ScrollContainer({
   const { scrollRef, contentRef } = useStickToBottom({
     initial: "instant",
   });
+  const tempScrollRef = useRef<HTMLElement>(null);
+  const tempContentRef = useRef<HTMLElement>(null);
 
   useEffect(() => {
     if (!autoScrollToBottom) {
+      tempScrollRef.current = scrollRef.current;
+      tempContentRef.current = contentRef.current;
       scrollRef.current = null;
       contentRef.current = null;
+    } else if (tempScrollRef.current && tempContentRef.current) {
+      scrollRef.current = tempScrollRef.current;
+      contentRef.current = tempContentRef.current;
     }
   }, [autoScrollToBottom, contentRef, scrollRef]);