diff --git a/webui/src/web-components/sketch-app-shell.ts b/webui/src/web-components/sketch-app-shell.ts
index bdab955..0659241 100644
--- a/webui/src/web-components/sketch-app-shell.ts
+++ b/webui/src/web-components/sketch-app-shell.ts
@@ -1069,8 +1069,17 @@
       "sketch-chat-input",
     ) as SketchChatInput;
     if (chatInput) {
-      chatInput.content = e.detail.responseText;
+      if (chatInput.content && chatInput.content.trim() !== "") {
+        chatInput.content += "\n\n";
+      }
+      chatInput.content += e.detail.responseText;
       chatInput.focus();
+      // Adjust textarea height to accommodate new content
+      requestAnimationFrame(() => {
+        if (chatInput.adjustChatSpacing) {
+          chatInput.adjustChatSpacing();
+        }
+      });
     }
   }