diff --git a/web/app/components/workflow-app/hooks/use-nodes-sync-draft.ts b/web/app/components/workflow-app/hooks/use-nodes-sync-draft.ts
index f387647c43..bd1fa0a19f 100644
--- a/web/app/components/workflow-app/hooks/use-nodes-sync-draft.ts
+++ b/web/app/components/workflow-app/hooks/use-nodes-sync-draft.ts
@@ -5,7 +5,6 @@ import { useParams } from 'next/navigation'
 import {
   useWorkflowStore,
 } from '@/app/components/workflow/store'
-import { BlockEnum } from '@/app/components/workflow/types'
 import {
   useNodesReadOnly,
 } from '@/app/components/workflow/hooks/use-workflow'
@@ -35,13 +34,11 @@ export const useNodesSyncDraft = () => {
       conversationVariables,
       environmentVariables,
       syncWorkflowDraftHash,
-      // isWorkflowDataLoaded,
+      isWorkflowDataLoaded,
     } = workflowStore.getState()
 
-    if (appId && !!nodes.length) {
-      const hasStartNode = nodes.find(node => node.data.type === BlockEnum.Start)
-
-      if (!hasStartNode)
+    if (appId) {
+      if (!isWorkflowDataLoaded)
         return null
 
       const features = featuresStore!.getState().features
diff --git a/web/app/components/workflow-app/hooks/use-workflow-refresh-draft.ts b/web/app/components/workflow-app/hooks/use-workflow-refresh-draft.ts
index b45ab16c14..a4c36de814 100644
--- a/web/app/components/workflow-app/hooks/use-workflow-refresh-draft.ts
+++ b/web/app/components/workflow-app/hooks/use-workflow-refresh-draft.ts
@@ -33,6 +33,7 @@ export const useWorkflowRefreshDraft = () => {
       }, {} as Record<string, string>))
       setEnvironmentVariables(response.environment_variables?.map(env => env.value_type === 'secret' ? { ...env, value: '[__HIDDEN__]' } : env) || [])
       setConversationVariables(response.conversation_variables || [])
+      workflowStore.setState({ isWorkflowDataLoaded: true })
     }).finally(() => setIsSyncingWorkflowDraft(false))
   }, [handleUpdateWorkflowCanvas, workflowStore])
 
diff --git a/web/app/components/workflow/nodes/start/default.ts b/web/app/components/workflow/nodes/start/default.ts
index 3b98b57a73..d4f3557264 100644
--- a/web/app/components/workflow/nodes/start/default.ts
+++ b/web/app/components/workflow/nodes/start/default.ts
@@ -8,7 +8,6 @@ const metaData = genNodeMetaData({
   type: BlockEnum.Start,
   isStart: true,
   isRequired: true,
-  isUndeletable: true,
   isSingleton: true,
   isTypeFixed: true,
 })