frontend/src/pages/AssistantChatPage.tsx

@@ -120,6 +120,11 @@ export default function AssistantChatPage() {
     navigate(location.pathname, { replace: true, state: {} })
 
     const sendPrefill = async () => {
+      // Clear stale task lane from previous session
+      setShowTaskLane(false)
+      setActiveQuestions([])
+      setActiveActions([])
+
       try {
         const session = await aiSessionsApi.createChatSession({
           intake_type: 'free_text',