diff --git a/app/main.py b/app/main.py
index f85621c..777328a 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1665,12 +1665,31 @@ def session_view_page(session_id: str, request: Request, user: User = Depends(re
     .cr-val{{font:600 13px/1 monospace;color:#dce8f5;flex:1;overflow:hidden;
       text-overflow:ellipsis;white-space:nowrap;}}
     .cr-masked{{letter-spacing:.1em;font-size:14px;}}
-
     .cr-hint{{margin:4px 0 0;font:400 11px/1.35 sans-serif;color:rgba(180,210,240,.65);}}
   </style>
 </head>
 <body>
-  <iframe src="{iframe_src}" allow="clipboard-read; clipboard-write"></iframe>{creds_html}
+  <iframe id="app-frame" src="" allow="clipboard-read; clipboard-write" style="display:none"></iframe>{creds_html}
+  <script>
+    const sessionId = "{session_id}";
+    const iframeSrc = "{iframe_src}";
+    async function waitReady() {{
+      try {{
+        const r = await fetch(`/api/sessions/${{sessionId}}/status`, {{credentials:'include'}});
+        if (r.ok) {{
+          const data = await r.json();
+          if (data.ready) {{
+            const f = document.getElementById('app-frame');
+            f.src = iframeSrc;
+            f.style.display = '';
+            return;
+          }}
+        }}
+      }} catch(e) {{}}
+      setTimeout(waitReady, 400);
+    }}
+    waitReady();
+  </script>
 </body>
 </html>
 """.strip()
