diff --git a/webui/src/web-components/mobile-chat.ts b/webui/src/web-components/mobile-chat.ts
index 52d9002..c746686 100644
--- a/webui/src/web-components/mobile-chat.ts
+++ b/webui/src/web-components/mobile-chat.ts
@@ -283,6 +283,11 @@
   }
 
   private shouldShowMessage(message: AgentMessage): boolean {
+    // Filter out hidden messages (subconversations) like the regular UI does
+    if (message.hide_output) {
+      return false;
+    }
+
     // Show user, agent, and error messages with content
     return (
       (message.type === "user" ||