Can't set app.buildAssetsDir when using Nuxi 3.11.0

[martinsjek]

Setting this when using Nuxi 3.11.0:

app: { buildAssetsDir: '_nuxt_example' }

I get this error on "npm run dev (nuxt dev)"
[Vue Router warn]: No match found for location with path "/_nuxt_example/"

Stackblitz example: https://stackblitz.com/edit/nuxt-starter-g85hsv?file=nuxt.config.ts,pages%2Ftest.vue

Go to "/test" page.

when i rollback to 3.10.0, everything works