diff --git a/web/src/editor/AssistantTab.tsx b/web/src/editor/AssistantTab.tsx
index d42faf5..42ce553 100644
--- a/web/src/editor/AssistantTab.tsx
+++ b/web/src/editor/AssistantTab.tsx
@@ -40,8 +40,12 @@ export function AssistantTab({ gardenId, canEdit, undo, large = false }: { garde
   // Deliberately NOT aborted on unmount: selecting a bed switches the rail to
   // the inspector, and that must not kill a turn mid-flight. The request runs
   // on; the exchange is persisted server-side; coming back shows it.
+  // Instant, not smooth: Chrome left the thread at the top with
+  // `behavior: 'smooth'` — a smooth scrollIntoView into this nested scroller
+  // never moved it, so every new reply landed out of view below a long
+  // conversation (found live, 2026-08-23). The instant form scrolls.
   useEffect(() => {
-    bottom.current?.scrollIntoView({ behavior: 'smooth', block: 'end' })
+    bottom.current?.scrollIntoView({ block: 'end' })
   }, [history.data, pending])
 
   const send = () => {