Laravel 5.7 Auth::loginUsingId() not working after CSRF token generated

I am trying to auto-login user on step-2 of registration steps. After successful insert into db i am using Auth::loginUsingId($user_id) to auto-login user using ajax. I am always submitting CSRF token on each steps.

Now the problem is after successful login CSRF token get generated and Auth::user() gets blank on step 3

Also before and after login CSRF is different.

via Chebli Mohamed