diff --git a/docs/notebooks/page_mode_example.ipynb b/docs/notebooks/page_mode_example.ipynb
index 994c895..1692771 100644
--- a/docs/notebooks/page_mode_example.ipynb
+++ b/docs/notebooks/page_mode_example.ipynb
@@ -147,11 +147,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [],
    "source": [
-    "from esbuild_py import transform\n",
     "from vitessce import (\n",
     "    VitessceConfig,\n",
     "    Component as cm,\n",
@@ -159,7 +158,7 @@
     "    AnnDataWrapper,\n",
     "    CsvWrapper,\n",
     ")\n",
-    "from os.path import join"
+    "from esbuild_py import transform"
    ]
   },
   {
@@ -171,16 +170,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "<vitessce.config.VitessceConfig at 0x2d3892c50>"
+       "<vitessce.config.VitessceConfig at 0x177917d30>"
       ]
      },
-     "execution_count": 15,
+     "execution_count": 13,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -322,7 +321,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -409,13 +408,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 18,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "f24cc9d59e9a4d458c4be1a66d481bc6",
+       "model_id": "4a2ef58904b34cb38cc97eb7330364a5",
        "version_major": 2,
        "version_minor": 1
       },
@@ -423,7 +422,7 @@
        "VitessceWidget(config={'version': '1.0.17', 'name': 'ComparativeData example', 'description': '', 'datasets': …"
       ]
      },
-     "execution_count": 18,
+     "execution_count": 16,
      "metadata": {},
      "output_type": "execute_result"
     }
diff --git a/src/vitessce/widget.py b/src/vitessce/widget.py
index 2878acf..4900fe5 100644
--- a/src/vitessce/widget.py
+++ b/src/vitessce/widget.py
@@ -338,7 +338,7 @@ def get_uid_str(uid):
         const divRef = React.useRef();
 
         React.useEffect(() => {
-            if(!divRef.current) {
+            if(!divRef.current || pageMode) {
                 return () => {};
             }
 
@@ -364,7 +364,7 @@ def get_uid_str(uid):
                     divRef.current.removeEventListener("mouseleave", handleMouseLeave);
                 }
             };
-        }, [divRef]);
+        }, [divRef, pageMode]);
 
         // Config changed on JS side (from within <Vitessce/>),
         // send updated config to Python side.