diff --git a/app/api/conversations/[conversationId]/name/route.ts b/app/api/conversations/[conversationId]/name/route.ts
index 1411123..09db40c 100644
--- a/app/api/conversations/[conversationId]/name/route.ts
+++ b/app/api/conversations/[conversationId]/name/route.ts
@@ -3,14 +3,14 @@ import { NextResponse } from 'next/server'
 import { client, getInfo } from '@/app/api/utils/common'
 
 export async function POST(request: NextRequest, { params }: {
-  params: { conversationId: string }
+  params: Promise<{ conversationId: string }>
 }) {
   const body = await request.json()
   const {
     auto_generate,
     name,
   } = body
-  const { conversationId } = params
+  const { conversationId } = await params
   const { user } = getInfo(request)
 
   // auto generate name
diff --git a/app/api/messages/[messageId]/feedbacks/route.ts b/app/api/messages/[messageId]/feedbacks/route.ts
index 4d90fe6..d742f7c 100644
--- a/app/api/messages/[messageId]/feedbacks/route.ts
+++ b/app/api/messages/[messageId]/feedbacks/route.ts
@@ -3,13 +3,13 @@ import { NextResponse } from 'next/server'
 import { client, getInfo } from '@/app/api/utils/common'
 
 export async function POST(request: NextRequest, { params }: {
-  params: { messageId: string }
+  params: Promise<{ messageId: string }>
 }) {
   const body = await request.json()
   const {
     rating,
   } = body
-  const { messageId } = params
+  const { messageId } = await params
   const { user } = getInfo(request)
   const { data } = await client.messageFeedback(messageId, rating, user)
   return NextResponse.json(data)
diff --git a/app/api/utils/common.ts b/app/api/utils/common.ts
index cc0f6b4..8a13a24 100644
--- a/app/api/utils/common.ts
+++ b/app/api/utils/common.ts
@@ -15,10 +15,10 @@ export const getInfo = (request: NextRequest) => {
 }
 
 export const setSession = (sessionId: string) => {
-    if (APP_INFO.disable_session_same_site)
-        return { 'Set-Cookie': `session_id=${sessionId}; SameSite=None; Secure` }
+  if (APP_INFO.disable_session_same_site)
+  { return { 'Set-Cookie': `session_id=${sessionId}; SameSite=None; Secure` } }
 
-    return { 'Set-Cookie': `session_id=${sessionId}` }
+  return { 'Set-Cookie': `session_id=${sessionId}` }
 }
 
 export const client = new ChatClient(API_KEY, API_URL || undefined)
diff --git a/app/components/base/image-gallery/index.tsx b/app/components/base/image-gallery/index.tsx
index c8d32f4..9a0c13d 100644
--- a/app/components/base/image-gallery/index.tsx
+++ b/app/components/base/image-gallery/index.tsx
@@ -32,12 +32,15 @@ const ImageGallery: FC<Props> = ({
 }) => {
   const [imagePreviewUrl, setImagePreviewUrl] = useState('')
 
-  const imgNum = srcs.length
+  const validSrcs = srcs.filter(src => src && src.trim() !== '')
+  const imgNum = validSrcs.length
   const imgStyle = getWidthStyle(imgNum)
+
+  if (imgNum === 0) { return null }
+
   return (
     <div className={cn(s[`img-${imgNum}`], 'flex flex-wrap')}>
-      {/* TODO: support preview */}
-      {srcs.map((src, index) => (
+      {validSrcs.map((src, index) => (
         <img
           key={index}
           className={s.item}
diff --git a/app/components/base/streamdown-markdown.tsx b/app/components/base/streamdown-markdown.tsx
index 8732418..4020e23 100644
--- a/app/components/base/streamdown-markdown.tsx
+++ b/app/components/base/streamdown-markdown.tsx
@@ -9,7 +9,7 @@ interface StreamdownMarkdownProps {
 
 export function StreamdownMarkdown({ content, className = '' }: StreamdownMarkdownProps) {
   return (
-    <div className={`markdown-body streamdown-markdown ${className}`}>
+    <div className={`streamdown-markdown ${className}`}>
       <Streamdown>{content}</Streamdown>
     </div>
   )
diff --git a/app/components/base/tooltip/index.tsx b/app/components/base/tooltip/index.tsx
index 54fc51d..bf72c0d 100644
--- a/app/components/base/tooltip/index.tsx
+++ b/app/components/base/tooltip/index.tsx
@@ -1,9 +1,8 @@
 'use client'
 import classNames from 'classnames'
 import type { FC } from 'react'
-import React from 'react'
-import { Tooltip as ReactTooltip } from 'react-tooltip' // fixed version to 5.8.3 https://github.com/ReactTooltip/react-tooltip/issues/972
-import 'react-tooltip/dist/react-tooltip.css'
+import React, { useState } from 'react'
+import { PortalToFollowElem, PortalToFollowElemContent, PortalToFollowElemTrigger } from '@/app/components/base/portal-to-follow-elem'
 
 interface TooltipProps {
   selector: string
@@ -15,6 +14,10 @@ interface TooltipProps {
   children: React.ReactNode
 }
 
+const arrow = (
+  <svg className="absolute text-white h-2 w-full left-0 top-full" x="0px" y="0px" viewBox="0 0 255 255"><polygon className="fill-current" points="0,0 127.5,127.5 255,0"></polygon></svg>
+)
+
 const Tooltip: FC<TooltipProps> = ({
   selector,
   content,
@@ -24,22 +27,31 @@ const Tooltip: FC<TooltipProps> = ({
   className,
   clickable,
 }) => {
+  const [open, setOpen] = useState(false)
+  const triggerMethod = clickable ? 'click' : 'hover'
+
   return (
-    <div className='tooltip-container'>
-      {React.cloneElement(children as React.ReactElement, {
-        'data-tooltip-id': selector,
-      })
-      }
-      <ReactTooltip
-        id={selector}
-        content={content}
-        className={classNames('!bg-white !text-xs !font-normal !text-gray-700 !shadow-lg !opacity-100', className)}
-        place={position}
-        clickable={clickable}
+    <PortalToFollowElem
+      open={open}
+      onOpenChange={setOpen}
+      placement={position}
+      offset={10}
+    >
+      <PortalToFollowElemTrigger
+        data-selector={selector}
+        onClick={() => triggerMethod === 'click' && setOpen(v => !v)}
+        onMouseEnter={() => triggerMethod === 'hover' && setOpen(true)}
+        onMouseLeave={() => triggerMethod === 'hover' && setOpen(false)}
       >
-        {htmlContent && htmlContent}
-      </ReactTooltip>
-    </div>
+        {children}
+      </PortalToFollowElemTrigger>
+      <PortalToFollowElemContent className="z-[999]">
+        <div className={classNames('relative px-3 py-2 text-xs font-normal text-gray-700 bg-white rounded-md shadow-lg', className)}>
+          {htmlContent ?? content}
+          {arrow}
+        </div>
+      </PortalToFollowElemContent>
+    </PortalToFollowElem>
   )
 }
 
diff --git a/app/components/chat/answer/index.tsx b/app/components/chat/answer/index.tsx
index 56733a4..8bb8e2c 100644
--- a/app/components/chat/answer/index.tsx
+++ b/app/components/chat/answer/index.tsx
@@ -187,7 +187,7 @@ const Answer: FC<IAnswerProps> = ({
               </div>
             )}
         </div>
-        <div className={`${s.answerWrap}`}>
+        <div className={`${s.answerWrap} max-w-[calc(100%-3rem)]`}>
           <div className={`${s.answer} relative text-sm text-gray-900`}>
             <div className={`ml-2 py-3 px-4 bg-gray-100 rounded-tr-2xl rounded-b-2xl ${workflowProcess && 'min-w-[480px]'}`}>
               {workflowProcess && (
diff --git a/app/components/chat/index.tsx b/app/components/chat/index.tsx
index ee4fabc..b5df141 100644
--- a/app/components/chat/index.tsx
+++ b/app/components/chat/index.tsx
@@ -170,7 +170,7 @@ const Chat: FC<IChatProps> = ({
       </div>
       {
         !isHideSendInput && (
-          <div className={cn(!feedbackDisabled && '!left-3.5 !right-3.5', 'absolute z-10 bottom-0 left-0 right-0')}>
+          <div className='fixed z-10 bottom-0 left-1/2 transform -translate-x-1/2 pc:ml-[122px] tablet:ml-[96px] mobile:ml-0 pc:w-[794px] tablet:w-[794px] max-w-full mobile:w-full px-3.5'>
             <div className='p-[5.5px] max-h-[150px] bg-white border-[1.5px] border-gray-200 rounded-xl overflow-y-auto'>
               {
                 visionConfig?.enabled && (
@@ -217,8 +217,8 @@ const Chat: FC<IChatProps> = ({
                 onKeyDown={handleKeyDown}
                 autoSize
               />
-              <div className="absolute bottom-2 right-2 flex items-center h-8">
-                <div className={`${s.count} mr-4 h-5 leading-5 text-sm bg-gray-50 text-gray-500`}>{query.trim().length}</div>
+              <div className="absolute bottom-2 right-6 flex items-center h-8">
+                <div className={`${s.count} mr-3 h-5 leading-5 text-sm bg-gray-50 text-gray-500 px-2 rounded`}>{query.trim().length}</div>
                 <Tooltip
                   selector='send-tip'
                   htmlContent={
diff --git a/app/components/chat/question/index.tsx b/app/components/chat/question/index.tsx
index 75b5391..b085f32 100644
--- a/app/components/chat/question/index.tsx
+++ b/app/components/chat/question/index.tsx
@@ -4,7 +4,7 @@ import React from 'react'
 import type { IChatItem } from '../type'
 import s from '../style.module.css'
 
-import { Markdown } from '@/app/components/base/markdown'
+import StreamdownMarkdown from '@/app/components/base/streamdown-markdown'
 import ImageGallery from '@/app/components/base/image-gallery'
 
 type IQuestionProps = Pick<IChatItem, 'id' | 'content' | 'useCurrentUserAvatar'> & {
@@ -23,7 +23,7 @@ const Question: FC<IQuestionProps> = ({ id, content, useCurrentUserAvatar, imgSr
             {imgSrcs && imgSrcs.length > 0 && (
               <ImageGallery srcs={imgSrcs} />
             )}
-            <Markdown content={content} />
+            <StreamdownMarkdown content={content} />
           </div>
         </div>
       </div>
diff --git a/app/components/index.tsx b/app/components/index.tsx
index 76b7700..5f932bf 100644
--- a/app/components/index.tsx
+++ b/app/components/index.tsx
@@ -174,8 +174,15 @@ const Main: FC<IMainProps> = () => {
   const [chatList, setChatList, getChatList] = useGetState<ChatItem[]>([])
   const chatListDomRef = useRef<HTMLDivElement>(null)
   useEffect(() => {
-    // scroll to bottom
-    if (chatListDomRef.current) { chatListDomRef.current.scrollTop = chatListDomRef.current.scrollHeight }
+    // scroll to bottom with page-level scrolling
+    if (chatListDomRef.current) {
+      setTimeout(() => {
+        chatListDomRef.current?.scrollIntoView({
+          behavior: 'auto',
+          block: 'end',
+        })
+      }, 50)
+    }
   }, [chatList, currConversationId])
   // user can not edit inputs if user had send message
   const canEditInputs = !chatList.some(item => item.isAnswer === false) && isNewConversation
@@ -677,18 +684,16 @@ const Main: FC<IMainProps> = () => {
 
           {
             hasSetInputs && (
-              <div className='relative grow h-[200px] pc:w-[794px] max-w-full mobile:w-full pb-[66px] mx-auto mb-3.5 overflow-hidden'>
-                <div className='h-full overflow-y-auto' ref={chatListDomRef}>
-                  <Chat
-                    chatList={chatList}
-                    onSend={handleSend}
-                    onFeedback={handleFeedback}
-                    isResponding={isResponding}
-                    checkCanSend={checkCanSend}
-                    visionConfig={visionConfig}
-                    fileConfig={fileConfig}
-                  />
-                </div>
+              <div className='relative grow pc:w-[794px] max-w-full mobile:w-full pb-[180px] mx-auto mb-3.5' ref={chatListDomRef}>
+                <Chat
+                  chatList={chatList}
+                  onSend={handleSend}
+                  onFeedback={handleFeedback}
+                  isResponding={isResponding}
+                  checkCanSend={checkCanSend}
+                  visionConfig={visionConfig}
+                  fileConfig={fileConfig}
+                />
               </div>)
           }
         </div>
diff --git a/app/components/welcome/index.tsx b/app/components/welcome/index.tsx
index f55d22e..59b7376 100644
--- a/app/components/welcome/index.tsx
+++ b/app/components/welcome/index.tsx
@@ -37,7 +37,6 @@ const Welcome: FC<IWelcomeProps> = ({
   savedInputs,
   onInputsChange,
 }) => {
-  console.log(promptConfig)
   const { t } = useTranslation()
   const hasVar = promptConfig.prompt_variables.length > 0
   const [isFold, setIsFold] = useState<boolean>(true)
diff --git a/app/layout.tsx b/app/layout.tsx
index 7092434..c5bc12e 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -3,12 +3,12 @@ import { getLocaleOnServer } from '@/i18n/server'
 import './styles/globals.css'
 import './styles/markdown.scss'
 
-const LocaleLayout = ({
+const LocaleLayout = async ({
   children,
 }: {
   children: React.ReactNode
 }) => {
-  const locale = getLocaleOnServer()
+  const locale = await getLocaleOnServer()
   return (
     <html lang={locale ?? 'en'} className="h-full">
       <body className="h-full">
diff --git a/config/index.ts b/config/index.ts
index 74c9758..d803bb6 100644
--- a/config/index.ts
+++ b/config/index.ts
@@ -8,7 +8,7 @@ export const APP_INFO: AppInfo = {
   copyright: '',
   privacy_policy: '',
   default_language: 'en',
-  disable_session_same_site: false, // set it to true if you want to embed the chatbot in an iframe  
+  disable_session_same_site: false, // set it to true if you want to embed the chatbot in an iframe
 }
 
 export const isShowPrompt = false
diff --git a/i18n/lang/app.fr.ts b/i18n/lang/app.fr.ts
index 6850077..b69fd03 100644
--- a/i18n/lang/app.fr.ts
+++ b/i18n/lang/app.fr.ts
@@ -34,4 +34,3 @@ const translation = {
 }
 
 export default translation
-
diff --git a/i18n/lang/common.fr.ts b/i18n/lang/common.fr.ts
index 9389d85..a0e7380 100644
--- a/i18n/lang/common.fr.ts
+++ b/i18n/lang/common.fr.ts
@@ -31,4 +31,3 @@ const translation = {
 }
 
 export default translation
-
diff --git a/i18n/lang/tools.fr.ts b/i18n/lang/tools.fr.ts
index d6aeb25..1a0bbd6 100644
--- a/i18n/lang/tools.fr.ts
+++ b/i18n/lang/tools.fr.ts
@@ -101,4 +101,3 @@ const translation = {
 }
 
 export default translation
-
diff --git a/i18n/server.ts b/i18n/server.ts
index 5b97004..f043b98 100644
--- a/i18n/server.ts
+++ b/i18n/server.ts
@@ -6,19 +6,20 @@ import { match } from '@formatjs/intl-localematcher'
 import type { Locale } from '.'
 import { i18n } from '.'
 
-export const getLocaleOnServer = (): Locale => {
+export const getLocaleOnServer = async (): Promise<Locale> => {
   // @ts-expect-error locales are readonly
   const locales: string[] = i18n.locales
 
   let languages: string[] | undefined
   // get locale from cookie
-  const localeCookie = cookies().get('locale')
+  const localeCookie = (await cookies()).get('locale')
   languages = localeCookie?.value ? [localeCookie.value] : []
 
   if (!languages.length) {
     // Negotiator expects plain object so we need to transform headers
     const negotiatorHeaders: Record<string, string> = {}
-    headers().forEach((value, key) => (negotiatorHeaders[key] = value))
+    const headersList = await headers()
+    headersList.forEach((value, key) => (negotiatorHeaders[key] = value))
     // Use negotiator and intl-localematcher to get best locale
     languages = new Negotiator({ headers: negotiatorHeaders }).languages()
   }
diff --git a/package.json b/package.json
index 07276b1..c9bf7a3 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "react-i18next": "^12.2.0",
     "react-markdown": "^8.0.6",
     "react-syntax-highlighter": "^15.5.0",
-    "react-tooltip": "~5.8.3",
+    "react-tooltip": "~5.29.1",
     "rehype-katex": "^7.0.1",
     "remark-breaks": "^4.0.0",
     "remark-gfm": "^4.0.0",
diff --git a/types/app.ts b/types/app.ts
index 861ad9c..7d0d50f 100644
--- a/types/app.ts
+++ b/types/app.ts
@@ -112,7 +112,7 @@ export interface AppInfo {
   default_language: Locale
   copyright?: string
   privacy_policy?: string
-  disable_session_same_site?: boolean  
+  disable_session_same_site?: boolean
 }
 
 export enum Resolution {