[2651] Cannot read property 'breakpoint' of undefined

Using : "nuxt": "^1.0.0-rc11".

I have two roads (aka two components) :

/       (index.vue)
/app (app.vue)

Everything works fine with SSR.

When I land on the homepage, I have a router-link to /app that works perfectly fine but, when I do F5, CTRL+R, CTRL+shift+R directly on the sub-page /app, I have the following error :

Cannot read property 'breakpoint' of undefined

I MUST go back to /, click again on my link to /app and at this point, I can see the content of my /app page again. It's impossible to do a simple F5 on `/app since it directly triggers this error

Any ideas on how to fix this?