AAD authen staticwebapp.config.json SvelteKit SSR - azure

Question

I created a Static Web App on Azure using Sveltekit but it seems that SSR is not working when I add AAD authentication with staticwebapp.config.json. Here is an example:
+page.server.js
export function load() {
return {
post: {
title: 'Title',
content: 'Content'
}
};
}
+page.svelte
<script>
export let data;
</script>
<h1>{data.post.title}</h1>
<div>{data.post.content}</div>
If I use +page.js rather than +page.server.js it works perfectly. The AAD auth works also using +page.js and I can see my auth infos at /.auth/me
The page with +page.server.js is not working and redirect me to my home page.
staticwebapp.config.json
{
"auth": {
"identityProviders": {
"azureActiveDirectory": {
"registration": {
"openIdIssuer": "https://login.microsoftonline.com/<my-tenant-id>/v2.0",
"clientIdSettingName": "AAD_CLIENT_ID",
"clientSecretSettingName": "AAD_CLIENT_SECRET"
}
}
}
},
"navigationFallback": {
"rewrite": "index.html",
"exclude": ["/images/*.{png,jpg,gif}", "/css/*"]
},
"routes": [
{
"route": "/login",
"rewrite": "/.auth/login/aad",
"allowedRoles": ["anonymous", "authenticated"]
},
{
"route": "/.auth/login/github",
"statusCode": 404
},
{
"route": "/.auth/login/twitter",
"statusCode": 404
},
{
"route": "/logout",
"redirect": "/.auth/logout",
"allowedRoles": ["anonymous", "authenticated"]
},
{
"route": "/*",
"allowedRoles": ["authenticated"]
}
],
"responseOverrides": {
"401": {
"redirect": "/login",
"statusCode": 302
}
},
"globalHeaders": {
"content-security-policy": "default-src https: 'unsafe-eval' 'unsafe-inline'; object-src 'none'",
"Cache-Control": "no-cache, no-store"
},
"mimeTypes": {
".json": "text/json"
}
}
Thanks in advance for your help.
If I use +page.js rather than +page.server.js it works perfectly. The AAD auth works also using +page.js and I can see my auth infos at /.auth/me
The page with +page.server.js is not working and redirect me to my home page.