fix messages-viewer
diff --git a/webui/src/messages-viewer.ts b/webui/src/messages-viewer.ts
index 9a08da3..e612357 100644
--- a/webui/src/messages-viewer.ts
+++ b/webui/src/messages-viewer.ts
@@ -16,7 +16,7 @@
   const messages = aggregateAgentMessages(visibleMessages, []);
   timelineEl.messages = messages;
   timelineEl.toolCalls = viewData.ToolResults;
-  //timelineEl.scrollContainer = window.document;
+  timelineEl.scrollContainer = { value: window.document.body };
   container.replaceWith(timelineEl);
 }