diff --git a/packages/app/src/pages/layout/sidebar-items.tsx b/packages/app/src/pages/layout/sidebar-items.tsx
index f27a9bb7a9..3aac5a6131 100644
--- a/packages/app/src/pages/layout/sidebar-items.tsx
+++ b/packages/app/src/pages/layout/sidebar-items.tsx
@@ -166,18 +166,9 @@ export const SessionItem = (props: SessionItemProps): JSX.Element => {
   })
   const isWorking = createMemo(() => {
     if (hasPermissions()) return false
-    const pending = (sessionStore.message[props.session.id] ?? []).findLast(
-      (message) =>
-        message.role === "assistant" &&
-        typeof (message as { time?: { completed?: unknown } }).time?.completed !== "number",
-    )
+    // This matches how the TUI does it
     const status = sessionStore.session_status[props.session.id]
-    return (
-      pending !== undefined ||
-      status?.type === "busy" ||
-      status?.type === "retry" ||
-      (status !== undefined && status.type !== "idle")
-    )
+    return status?.type === "busy" || status?.type === "retry"
   })
 
   const tint = createMemo(() => messageAgentColor(sessionStore.message[props.session.id], sessionStore.agent))
diff --git a/packages/app/src/pages/session.tsx b/packages/app/src/pages/session.tsx
index 1345e355eb..8bc7e6a5ca 100644
--- a/packages/app/src/pages/session.tsx
+++ b/packages/app/src/pages/session.tsx
@@ -1497,10 +1497,8 @@ export default function Page() {
     })
 
   const busy = (sessionID: string) => {
-    if ((sync.data.session_status[sessionID] ?? { type: "idle" as const }).type !== "idle") return true
-    return (sync.data.message[sessionID] ?? []).some(
-      (item) => item.role === "assistant" && typeof item.time.completed !== "number",
-    )
+    // This matches how the TUI does it
+    return (sync.data.session_status[sessionID] ?? { type: "idle" as const }).type !== "idle"
   }
 
   const queuedFollowups = createMemo(() => {