diff --git a/beta/src/components/MDX/Sandpack/CustomPreset.tsx b/beta/src/components/MDX/Sandpack/CustomPreset.tsx
index 4f250af8..15ccb4de 100644
--- a/beta/src/components/MDX/Sandpack/CustomPreset.tsx
+++ b/beta/src/components/MDX/Sandpack/CustomPreset.tsx
@@ -20,6 +20,9 @@ import {Preview} from './Preview';
 import {CustomTheme} from './Themes';
 import {useSandpackLint} from './useSandpackLint';
 
+// Workaround for https://github.com/reactjs/reactjs.org/issues/4686#issuecomment-1137402613.
+const emptyArray = [];
+
 export function CustomPreset({
   isSingleFile,
   showDevTools,
@@ -65,6 +68,7 @@ export function CustomPreset({
               showTabs={false}
               showRunButton={false}
               extensions={lintExtensions}
+              extensionsKeymap={emptyArray}
             />
             <Preview
               className="order-last xl:order-2"