go gorilla/sessions angularjs and path, session values not saved (find the bug/place the blame)

Ok where to start...

The problem is when I set the session's Path to "/" the session doesn't get saved.

And I set Path because when posting to a path that is not the path where the session gets saved, aka session.Save() is called the session value "user" is empty|nil|not set.
So I set Path: "/", but the session isn't saved. When checking Chromium I see that the cookie is set. I don't know where the problem is. Is it in gorilla/sessions? Is it in AngularJS? HTML5 mode is off in angular.

So to rephrase, this happens because /api/1.0/community is a different path than /api/1.0/user where the sessions.Save(r,w) function is called and that's why I set Path: "/", . But when Path is "/" the session value "user" isn't saved.

main.go

var (
	sessionStore    *sessions.CookieStore
	sessionAuthKey  []byte      = make([]byte, 64)
	sessionCryptKey []byte      = make([]byte, 32)
	router          *mux.Router = mux.NewRouter()
)

func init() {
	// Generate Session Secret
	sessionAuthKey = securecookie.GenerateRandomKey(64)
	sessionCryptKey = securecookie.GenerateRandomKey(32)

	// Create Session
	sessionStore = sessions.NewCookieStore(sessionAuthKey, sessionCryptKey)
	sessionStore.Options = &sessions.Options{
		Domain: ".mango.dev",
		Path:   "/",
		MaxAge: 0,
	}
}

func main() {
	api := router.PathPrefix("/api/1.0").Subrouter()
	api.HandleFunc("/user/register", UserRegisterHandler).Methods("POST")
	api.HandleFunc("/user/authenticate", UserAuthenticateHandler).Methods("POST")
	api.HandleFunc("/user/endsession", UserLogoutHandler).Methods("POST")
	api.HandleFunc("/user/profile", UserProfileHandler).Methods("GET")
	api.HandleFunc("/user/profile", UserUpdateProfileHandler).Methods("POST")
	api.HandleFunc("/user/reset_request", UserResetRequestHandler).Methods("POST")
	api.HandleFunc("/user/reset_password", UserResetPasswordHandler).Methods("POST")
	api.HandleFunc("/user/loginstatus", UserLoginStatusHandler).Methods("GET")
	api.HandleFunc("/forums/directory", ForumsDirectoryHandler).Methods("GET")
	api.HandleFunc("/community/list", CommunityListHandler).Methods("GET")
	api.HandleFunc("/community/show", CommunityShowHandler).Methods("GET")
	api.HandleFunc("/community/create", CommunityCreateHandler).Methods("POST")
	api.HandleFunc("/community/edit", CommunityEditHandler).Methods("GET")

	static := router.PathPrefix("/").Subrouter()
	static.Methods("GET").Handler(http.FileServer(http.Dir("webapp/public")))

	go func() {
		if err := http.ListenAndServe(":8080", Log(router)); err != nil {
			log.Fatal(err)
		}
	}()

	if err := http.ListenAndServeTLS(":8443", "ssl/mango.dev.crt", "ssl/mango.dev.pem", Log(router)); err != nil {
		log.Fatal(err)
	}
}

handlers.go

func UserAuthenticateHandler(w http.ResponseWriter, r *http.Request) {
// ...
	if valid {
		tu.Name = user.UserProfile.Name
		data["user"] = tu
		data["redirect"] = "/user/profile"
		user.Login(r.UserAgent(), r.RemoteAddr)
		session, _ := sessionStore.Get(r, "p")
		session.Values["user"] = user.Id.Hex()
		if tc.Rememberme {
			session.Options = &sessions.Options{
				Domain: ".mango.dev",
				Path:   "/",
				MaxAge: 86400 * 30 * 12,
			}
		}
		session.Save(r, w)
}

The problem was dundundun I had old cookies stored from before the change that had the Path "/api/1.0/user" and apparently this caused a problem since, I imagine, the longer or deeper path has priority over the shorter, root path, which makes perfect sense in retrospect.