diff --git a/web/app/components/app/configuration/debug/debug-with-multiple-model/chat-item.tsx b/web/app/components/app/configuration/debug/debug-with-multiple-model/chat-item.tsx
index e79cdf47939725..0e189b9036178e 100644
--- a/web/app/components/app/configuration/debug/debug-with-multiple-model/chat-item.tsx
+++ b/web/app/components/app/configuration/debug/debug-with-multiple-model/chat-item.tsx
@@ -46,6 +46,7 @@ const ChatItem: FC<ChatItemProps> = ({
   const config = useConfigFromDebugContext()
   const {
     chatList,
+    chatListRef,
     isResponding,
     handleSend,
     suggestedQuestions,
@@ -80,6 +81,8 @@ const ChatItem: FC<ChatItemProps> = ({
       query: message,
       inputs,
       model_config: configData,
+      is_regenerate: false,
+      parent_message_id: chatListRef.current.at(-1)?.id || null,
     }
 
     if (visionConfig.enabled && files?.length && supportVision)
@@ -93,7 +96,7 @@ const ChatItem: FC<ChatItemProps> = ({
         onGetSuggestedQuestions: (responseItemId, getAbortController) => fetchSuggestedQuestions(appId, responseItemId, getAbortController),
       },
     )
-  }, [appId, config, handleSend, inputs, modelAndParameter, textGenerationModelList, visionConfig.enabled])
+  }, [appId, config, handleSend, inputs, modelAndParameter, textGenerationModelList, visionConfig.enabled, chatListRef])
 
   const { eventEmitter } = useEventEmitterContextContext()
   eventEmitter?.useSubscription((v: any) => {
diff --git a/web/app/components/app/configuration/debug/debug-with-single-model/index.tsx b/web/app/components/app/configuration/debug/debug-with-single-model/index.tsx
index fa87b3e6375929..2bc68330960ef3 100644
--- a/web/app/components/app/configuration/debug/debug-with-single-model/index.tsx
+++ b/web/app/components/app/configuration/debug/debug-with-single-model/index.tsx
@@ -45,6 +45,7 @@ const DebugWithSingleModel = forwardRef<DebugWithSingleModelRefType, DebugWithSi
   const config = useConfigFromDebugContext()
   const {
     chatList,
+    chatListRef,
     isResponding,
     handleSend,
     suggestedQuestions,
@@ -65,7 +66,7 @@ const DebugWithSingleModel = forwardRef<DebugWithSingleModelRefType, DebugWithSi
   )
   useFormattingChangedSubscription(chatList)
 
-  const doSend: OnSend = useCallback((message, files, is_regenerate, last_answer) => {
+  const doSend: OnSend = useCallback((message, files, is_regenerate = false, last_answer) => {
     if (checkCanSend && !checkCanSend())
       return
     const currentProvider = textGenerationModelList.find(item => item.provider === modelConfig.provider)
@@ -86,8 +87,8 @@ const DebugWithSingleModel = forwardRef<DebugWithSingleModelRefType, DebugWithSi
       query: message,
       inputs,
       model_config: configData,
-      is_regenerate: !!is_regenerate,
-      parent_message_id: last_answer?.id,
+      is_regenerate,
+      parent_message_id: last_answer?.id || chatListRef.current.at(-1)?.id || null,
     }
 
     if (visionConfig.enabled && files?.length && supportVision)
@@ -101,7 +102,7 @@ const DebugWithSingleModel = forwardRef<DebugWithSingleModelRefType, DebugWithSi
         onGetSuggestedQuestions: (responseItemId, getAbortController) => fetchSuggestedQuestions(appId, responseItemId, getAbortController),
       },
     )
-  }, [appId, checkCanSend, completionParams, config, handleSend, inputs, modelConfig, textGenerationModelList, visionConfig.enabled])
+  }, [chatListRef, appId, checkCanSend, completionParams, config, handleSend, inputs, modelConfig, textGenerationModelList, visionConfig.enabled])
 
   const doRegenerate = useCallback((chatItem: ChatItem) => {
     const index = chatList.findIndex(item => item.id === chatItem.id)
diff --git a/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx b/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx
index babacc4de68dff..e40dc1861e2911 100644
--- a/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx
+++ b/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx
@@ -44,6 +44,7 @@ const ChatWrapper = () => {
   }, [appParams, currentConversationItem?.introduction, currentConversationId])
   const {
     chatList,
+    chatListRef,
     handleUpdateChatList,
     handleSend,
     handleStop,
@@ -64,13 +65,13 @@ const ChatWrapper = () => {
       currentChatInstanceRef.current.handleStop = handleStop
   }, [])
 
-  const doSend: OnSend = useCallback((message, files, is_regenerate, last_answer) => {
+  const doSend: OnSend = useCallback((message, files, is_regenerate = false, last_answer) => {
     const data: any = {
       query: message,
       inputs: currentConversationId ? currentConversationItem?.inputs : newConversationInputs,
       conversation_id: currentConversationId,
-      is_regenerate: !!is_regenerate,
-      parent_message_id: last_answer?.id || null,
+      is_regenerate,
+      parent_message_id: last_answer?.id || chatListRef.current.at(-1)?.id || null,
     }
 
     if (appConfig?.file_upload?.image.enabled && files?.length)
@@ -86,6 +87,7 @@ const ChatWrapper = () => {
       },
     )
   }, [
+    chatListRef,
     appConfig,
     currentConversationId,
     currentConversationItem,
diff --git a/web/app/components/base/chat/chat-with-history/hooks.tsx b/web/app/components/base/chat/chat-with-history/hooks.tsx
index 3061bf41b3a7cc..a4f36c84305d33 100644
--- a/web/app/components/base/chat/chat-with-history/hooks.tsx
+++ b/web/app/components/base/chat/chat-with-history/hooks.tsx
@@ -12,10 +12,10 @@ import produce from 'immer'
 import type {
   Callback,
   ChatConfig,
-  ChatItem,
   Feedback,
 } from '../types'
 import { CONVERSATION_ID_INFO } from '../constants'
+import { getPrevChatList } from '../utils'
 import {
   delConversation,
   fetchAppInfo,
@@ -34,30 +34,10 @@ import type {
   AppData,
   ConversationItem,
 } from '@/models/share'
-import { addFileInfos, sortAgentSorts } from '@/app/components/tools/utils'
 import { useToastContext } from '@/app/components/base/toast'
 import { changeLanguage } from '@/i18n/i18next-config'
 import { useAppFavicon } from '@/hooks/use-app-favicon'
 
-function appendQAToChatList(chatList: ChatItem[], item: any) {
-  // we append answer first and then question since will reverse the whole chatList later
-  chatList.push({
-    id: item.id,
-    content: item.answer,
-    agent_thoughts: addFileInfos(item.agent_thoughts ? sortAgentSorts(item.agent_thoughts) : item.agent_thoughts, item.message_files),
-    feedback: item.feedback,
-    isAnswer: true,
-    citation: item.retriever_resources,
-    message_files: item.message_files?.filter((file: any) => file.belongs_to === 'assistant') || [],
-  })
-  chatList.push({
-    id: `question-${item.id}`,
-    content: item.query,
-    isAnswer: false,
-    message_files: item.message_files?.filter((file: any) => file.belongs_to === 'user') || [],
-  })
-}
-
 export const useChatWithHistory = (installedAppInfo?: InstalledApp) => {
   const isInstalledApp = useMemo(() => !!installedAppInfo, [installedAppInfo])
   const { data: appInfo, isLoading: appInfoLoading, error: appInfoError } = useSWR(installedAppInfo ? null : 'appInfo', fetchAppInfo)
@@ -126,35 +106,12 @@ export const useChatWithHistory = (installedAppInfo?: InstalledApp) => {
   const { data: appConversationData, isLoading: appConversationDataLoading, mutate: mutateAppConversationData } = useSWR(['appConversationData', isInstalledApp, appId, false], () => fetchConversations(isInstalledApp, appId, undefined, false, 100))
   const { data: appChatListData, isLoading: appChatListDataLoading } = useSWR(chatShouldReloadKey ? ['appChatList', chatShouldReloadKey, isInstalledApp, appId] : null, () => fetchChatList(chatShouldReloadKey, isInstalledApp, appId))
 
-  const appPrevChatList = useMemo(() => {
-    const data = appChatListData?.data || []
-    const chatList: ChatItem[] = []
-
-    if (currentConversationId && data.length) {
-      let nextMessageId = null
-      for (const item of data) {
-        if (item.is_regenerated && !item.parent_message_id) {
-          appendQAToChatList(chatList, item)
-          break
-        }
-
-        if (!nextMessageId) {
-          appendQAToChatList(chatList, item)
-          if (item.parent_message_id)
-            nextMessageId = item.parent_message_id
-        }
-        else {
-          if (item.id === nextMessageId) {
-            appendQAToChatList(chatList, item)
-            nextMessageId = item.parent_message_id
-          }
-        }
-      }
-      chatList.reverse()
-    }
-
-    return chatList
-  }, [appChatListData, currentConversationId])
+  const appPrevChatList = useMemo(
+    () => (currentConversationId && appChatListData?.data.length)
+      ? getPrevChatList(appChatListData.data)
+      : [],
+    [appChatListData, currentConversationId],
+  )
 
   const [showNewConversationItemInList, setShowNewConversationItemInList] = useState(false)
 
diff --git a/web/app/components/base/chat/chat/hooks.ts b/web/app/components/base/chat/chat/hooks.ts
index 0fb7ab2a1133cb..12fe7f99732bbf 100644
--- a/web/app/components/base/chat/chat/hooks.ts
+++ b/web/app/components/base/chat/chat/hooks.ts
@@ -639,6 +639,7 @@ export const useChat = (
 
   return {
     chatList,
+    chatListRef,
     handleUpdateChatList,
     conversationId: conversationId.current,
     isResponding,
diff --git a/web/app/components/base/chat/embedded-chatbot/chat-wrapper.tsx b/web/app/components/base/chat/embedded-chatbot/chat-wrapper.tsx
index ec0fe1955cbb7e..6f685efae6a357 100644
--- a/web/app/components/base/chat/embedded-chatbot/chat-wrapper.tsx
+++ b/web/app/components/base/chat/embedded-chatbot/chat-wrapper.tsx
@@ -45,6 +45,7 @@ const ChatWrapper = () => {
     } as ChatConfig
   }, [appParams, currentConversationItem?.introduction, currentConversationId])
   const {
+    chatListRef,
     chatList,
     handleSend,
     handleStop,
@@ -66,13 +67,13 @@ const ChatWrapper = () => {
       currentChatInstanceRef.current.handleStop = handleStop
   }, [])
 
-  const doSend: OnSend = useCallback((message, files, is_regenerate, last_answer) => {
+  const doSend: OnSend = useCallback((message, files, is_regenerate = false, last_answer) => {
     const data: any = {
       query: message,
       inputs: currentConversationId ? currentConversationItem?.inputs : newConversationInputs,
       conversation_id: currentConversationId,
-      is_regenerate: !!is_regenerate,
-      parent_message_id: last_answer?.id || null,
+      is_regenerate,
+      parent_message_id: last_answer?.id || chatListRef.current.at(-1)?.id || null,
     }
 
     if (appConfig?.file_upload?.image.enabled && files?.length)
@@ -88,6 +89,7 @@ const ChatWrapper = () => {
       },
     )
   }, [
+    chatListRef,
     appConfig,
     currentConversationId,
     currentConversationItem,
diff --git a/web/app/components/base/chat/embedded-chatbot/hooks.tsx b/web/app/components/base/chat/embedded-chatbot/hooks.tsx
index 39d25f57d194e1..fd89efcbff3ab6 100644
--- a/web/app/components/base/chat/embedded-chatbot/hooks.tsx
+++ b/web/app/components/base/chat/embedded-chatbot/hooks.tsx
@@ -11,10 +11,10 @@ import { useLocalStorageState } from 'ahooks'
 import produce from 'immer'
 import type {
   ChatConfig,
-  ChatItem,
   Feedback,
 } from '../types'
 import { CONVERSATION_ID_INFO } from '../constants'
+import { getPrevChatList, getProcessedInputsFromUrlParams } from '../utils'
 import {
   fetchAppInfo,
   fetchAppMeta,
@@ -28,10 +28,8 @@ import type {
   // AppData,
   ConversationItem,
 } from '@/models/share'
-import { addFileInfos, sortAgentSorts } from '@/app/components/tools/utils'
 import { useToastContext } from '@/app/components/base/toast'
 import { changeLanguage } from '@/i18n/i18next-config'
-import { getProcessedInputsFromUrlParams } from '@/app/components/base/chat/utils'
 
 export const useEmbeddedChatbot = () => {
   const isInstalledApp = false
@@ -75,32 +73,12 @@ export const useEmbeddedChatbot = () => {
   const { data: appConversationData, isLoading: appConversationDataLoading, mutate: mutateAppConversationData } = useSWR(['appConversationData', isInstalledApp, appId, false], () => fetchConversations(isInstalledApp, appId, undefined, false, 100))
   const { data: appChatListData, isLoading: appChatListDataLoading } = useSWR(chatShouldReloadKey ? ['appChatList', chatShouldReloadKey, isInstalledApp, appId] : null, () => fetchChatList(chatShouldReloadKey, isInstalledApp, appId))
 
-  const appPrevChatList = useMemo(() => {
-    const data = appChatListData?.data || []
-    const chatList: ChatItem[] = []
-
-    if (currentConversationId && data.length) {
-      data.forEach((item: any) => {
-        chatList.push({
-          id: `question-${item.id}`,
-          content: item.query,
-          isAnswer: false,
-          message_files: item.message_files?.filter((file: any) => file.belongs_to === 'user') || [],
-        })
-        chatList.push({
-          id: item.id,
-          content: item.answer,
-          agent_thoughts: addFileInfos(item.agent_thoughts ? sortAgentSorts(item.agent_thoughts) : item.agent_thoughts, item.message_files),
-          feedback: item.feedback,
-          isAnswer: true,
-          citation: item.retriever_resources,
-          message_files: item.message_files?.filter((file: any) => file.belongs_to === 'assistant') || [],
-        })
-      })
-    }
-
-    return chatList
-  }, [appChatListData, currentConversationId])
+  const appPrevChatList = useMemo(
+    () => (currentConversationId && appChatListData?.data.length)
+      ? getPrevChatList(appChatListData.data)
+      : [],
+    [appChatListData, currentConversationId],
+  )
 
   const [showNewConversationItemInList, setShowNewConversationItemInList] = useState(false)
 
@@ -155,7 +133,7 @@ export const useEmbeddedChatbot = () => {
         type: 'text-input',
       }
     })
-  }, [appParams])
+  }, [initInputs, appParams])
 
   useEffect(() => {
     // init inputs from url params
diff --git a/web/app/components/base/chat/utils.ts b/web/app/components/base/chat/utils.ts
index 3fe5050cc7b34d..0a7148d219b03e 100644
--- a/web/app/components/base/chat/utils.ts
+++ b/web/app/components/base/chat/utils.ts
@@ -1,7 +1,10 @@
+import { addFileInfos, sortAgentSorts } from '../../tools/utils'
+import type { ChatItem } from './types'
+
 async function decodeBase64AndDecompress(base64String: string) {
   const binaryString = atob(base64String)
   const compressedUint8Array = Uint8Array.from(binaryString, char => char.charCodeAt(0))
-  const decompressedStream = new Response(compressedUint8Array).body.pipeThrough(new DecompressionStream('gzip'))
+  const decompressedStream = new Response(compressedUint8Array).body?.pipeThrough(new DecompressionStream('gzip'))
   const decompressedArrayBuffer = await new Response(decompressedStream).arrayBuffer()
   return new TextDecoder().decode(decompressedArrayBuffer)
 }
@@ -15,6 +18,61 @@ function getProcessedInputsFromUrlParams(): Record<string, any> {
   return inputs
 }
 
+function appendQAToChatList(chatList: ChatItem[], item: any) {
+  // we append answer first and then question since will reverse the whole chatList later
+  chatList.push({
+    id: item.id,
+    content: item.answer,
+    agent_thoughts: addFileInfos(item.agent_thoughts ? sortAgentSorts(item.agent_thoughts) : item.agent_thoughts, item.message_files),
+    feedback: item.feedback,
+    isAnswer: true,
+    citation: item.retriever_resources,
+    message_files: item.message_files?.filter((file: any) => file.belongs_to === 'assistant') || [],
+  })
+  chatList.push({
+    id: `question-${item.id}`,
+    content: item.query,
+    isAnswer: false,
+    message_files: item.message_files?.filter((file: any) => file.belongs_to === 'user') || [],
+  })
+}
+
+/**
+ * Computes the chat list for display.
+ *
+ * @param appChatListData - The history chat list data from the backend. This includes all history messages and may contain branches.
+ * @param currentConversationId - The ID of the current conversation.
+ * @returns An array of ChatItems representing the latest thread.
+ *
+ * Note: The chat list from the backend includes all history messages and may contain branches.
+ * This function only computes the latest thread from that list.
+ */
+function getPrevChatList(fetchedMessages: any[]) {
+  const ret: ChatItem[] = []
+
+  let nextMessageId = null
+  for (const item of fetchedMessages) {
+    if (item.is_regenerated && !item.parent_message_id) {
+      appendQAToChatList(ret, item)
+      break
+    }
+
+    if (!nextMessageId) {
+      appendQAToChatList(ret, item)
+      if (item.parent_message_id)
+        nextMessageId = item.parent_message_id
+    }
+    else {
+      if (item.id === nextMessageId) {
+        appendQAToChatList(ret, item)
+        nextMessageId = item.parent_message_id
+      }
+    }
+  }
+  return ret.reverse()
+}
+
 export {
   getProcessedInputsFromUrlParams,
+  getPrevChatList,
 }
diff --git a/web/app/components/workflow/panel/debug-and-preview/chat-wrapper.tsx b/web/app/components/workflow/panel/debug-and-preview/chat-wrapper.tsx
index 834ad94311e6e1..0fb4d71776df4a 100644
--- a/web/app/components/workflow/panel/debug-and-preview/chat-wrapper.tsx
+++ b/web/app/components/workflow/panel/debug-and-preview/chat-wrapper.tsx
@@ -58,6 +58,7 @@ const ChatWrapper = forwardRef<ChatWrapperRefType, ChatWrapperProps>(({ showConv
   const {
     conversationId,
     chatList,
+    chatListRef,
     handleUpdateChatList,
     handleStop,
     isResponding,
@@ -74,21 +75,21 @@ const ChatWrapper = forwardRef<ChatWrapperRefType, ChatWrapperProps>(({ showConv
     taskId => stopChatMessageResponding(appDetail!.id, taskId),
   )
 
-  const doSend = useCallback<OnSend>((query, files, is_regenerate, last_answer) => {
+  const doSend = useCallback<OnSend>((query, files, is_regenerate = false, last_answer) => {
     handleSend(
       {
         query,
         files,
         inputs: workflowStore.getState().inputs,
         conversation_id: conversationId,
-        is_regenerate: !!is_regenerate,
-        parent_message_id: last_answer?.id || null,
+        is_regenerate,
+        parent_message_id: last_answer?.id || chatListRef.current.at(-1)?.id || null,
       },
       {
         onGetSuggestedQuestions: (messageId, getAbortController) => fetchSuggestedQuestions(appDetail!.id, messageId, getAbortController),
       },
     )
-  }, [conversationId, handleSend, workflowStore, appDetail])
+  }, [chatListRef, conversationId, handleSend, workflowStore, appDetail])
 
   const doRegenerate = useCallback((chatItem: ChatItem) => {
     const index = chatList.findIndex(item => item.id === chatItem.id)
diff --git a/web/app/components/workflow/panel/debug-and-preview/hooks.ts b/web/app/components/workflow/panel/debug-and-preview/hooks.ts
index 56fd9c7b50d068..7e778da90d235e 100644
--- a/web/app/components/workflow/panel/debug-and-preview/hooks.ts
+++ b/web/app/components/workflow/panel/debug-and-preview/hooks.ts
@@ -405,6 +405,7 @@ export const useChat = (
   return {
     conversationId: conversationId.current,
     chatList,
+    chatListRef,
     handleUpdateChatList,
     handleSend,
     handleStop,
diff --git a/web/hooks/use-app-favicon.ts b/web/hooks/use-app-favicon.ts
index 86eadc1b3d0862..1ff743928faaed 100644
--- a/web/hooks/use-app-favicon.ts
+++ b/web/hooks/use-app-favicon.ts
@@ -5,10 +5,10 @@ import type { AppIconType } from '@/types/app'
 
 type UseAppFaviconOptions = {
   enable?: boolean
-  icon_type?: AppIconType
+  icon_type?: AppIconType | null
   icon?: string
-  icon_background?: string
-  icon_url?: string
+  icon_background?: string | null
+  icon_url?: string | null
 }
 
 export function useAppFavicon(options: UseAppFaviconOptions) {