Add bug reproduction

src/app/[locale]/layout.tsx

@@ -9,6 +9,8 @@ type Props = {
   params: Promise<{locale: string}>;
 };
 
+export const dynamicParams = false
+
 export function generateStaticParams() {
   return routing.locales.map((locale) => ({locale}));
 }

src/app/not-found.tsx

@@ -1,15 +1,5 @@
-import BaseLayout from '@/components/BaseLayout';
-import NotFoundPage from '@/components/NotFoundPage';
-import {routing} from '@/i18n/routing';
-
-// This page renders when a route like `/unknown.txt` is requested.
-// In this case, the layout at `app/[locale]/layout.tsx` receives
-// an invalid value as the `[locale]` param and calls `notFound()`.
+import { redirect } from 'next/navigation'
 
 export default function GlobalNotFound() {
-  return (
-    <BaseLayout locale={routing.defaultLocale}>
-      <NotFoundPage />
-    </BaseLayout>
-  );
+  return redirect('/')
 }

src/middleware.ts

@@ -14,6 +14,6 @@ export const config = {
 
     // Enable redirects that add missing locales
     // (e.g. `/pathnames` -> `/en/pathnames`)
-    '/((?!_next|_vercel|.*\\..*).*)'
+    '/((?!api|_next|_vercel|.*\\..*).*)'
   ]
 };