From 8d042f7d20a5bb96c46f470a20f42b49ad5e1084 Mon Sep 17 00:00:00 2001
From: Theodore Li <theo@sim.ai>
Date: Wed, 29 Apr 2026 11:39:24 -0700
Subject: [PATCH] fix(copilot): fix new task error (#4341)

* fix(copilot): fix new task error

* Keep recent copilot chat open on refresh
---
 .../w/[workflowId]/components/panel/panel.tsx | 31 +++++++++++++------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx
index 55369c378ca..a221304126c 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx
@@ -265,11 +265,9 @@ export const Panel = memo(function Panel({ workspaceId: propWorkspaceId }: Panel
 
     if (copilotChatId) return
     if (autoSelectAttemptedForRef.current.has(activeWorkflowId)) return
+    if (copilotChatList.length === 0) return
     autoSelectAttemptedForRef.current.add(activeWorkflowId)
-
-    if (copilotChatList.length > 0) {
-      setCopilotChatId(copilotChatList[0].id)
-    }
+    setCopilotChatId(copilotChatList[0].id)
   }, [copilotChatList, copilotChatId, activeWorkflowId, setCopilotChatId])
 
   useEffect(() => {
@@ -362,15 +360,30 @@ export const Panel = memo(function Panel({ workspaceId: propWorkspaceId }: Panel
     })
       .then((res) => (res.ok ? res.json() : Promise.reject(new Error('create chat failed'))))
       .then((data: { id?: string }) => {
-        if (data?.id) {
-          setCopilotChatId(data.id)
-          loadCopilotChats()
-        }
+        if (!data?.id) return
+        // Seed the new chat into the list cache before selecting it. Without this, the
+        // auto-select effect sees a selected id that isn't in the (still-stale) list and
+        // deselects it, which leaves the panel detached from the freshly created row.
+        queryClient.setQueryData<CopilotChatListItem[]>(
+          copilotChatsKeys.list(activeWorkflowId),
+          (prev) => [
+            {
+              id: data.id!,
+              title: null,
+              workflowId: activeWorkflowId,
+              updatedAt: new Date().toISOString(),
+              activeStreamId: null,
+            },
+            ...(prev ?? []),
+          ]
+        )
+        setCopilotChatId(data.id)
+        loadCopilotChats()
       })
       .catch((err) => {
         logger.error('Failed to create copilot chat', err)
       })
-  }, [activeWorkflowId, workspaceId, loadCopilotChats, setCopilotChatId])
+  }, [activeWorkflowId, workspaceId, loadCopilotChats, setCopilotChatId, queryClient])
 
   const prevResolvedRef = useRef<string | undefined>(undefined)
   useEffect(() => {