diff --git a/ui/public/index.html b/ui/public/index.html
index 47afc9a2c..0c082463a 100644
--- a/ui/public/index.html
+++ b/ui/public/index.html
@@ -33,6 +33,11 @@
     <script>
       window.__APP_CONFIG__ = "{{.AppConfig}}"
     </script>
+    <!-- Issue workaround for React v16. -->
+    <script>
+      // See https://github.com/facebook/react/issues/20829#issuecomment-802088260
+      if (!crossOriginIsolated) SharedArrayBuffer = ArrayBuffer;
+    </script>
   </head>
   <body>
     <noscript>You need to enable JavaScript to run this app.</noscript>
