diff --git a/start.ipynb b/start.ipynb
index 9fcb011..222560b 100644
--- a/start.ipynb
+++ b/start.ipynb
@@ -9,6 +9,9 @@
     "%%javascript\n",
     "IPython.OutputArea.prototype._should_scroll = function(lines) {\n",
     "    return false;\n",
+    "}\n",
+    "if (document.getElementById('appmode-busy')) {\n",
+    "    window.onbeforeunload = function() {return}\n",
     "}"
    ]
   },
@@ -108,7 +111,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -122,7 +125,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.4"
+   "version": "3.9.13"
   }
  },
  "nbformat": 4,