Reset password e-mail gets lost, when create user and reset password is called


I receive sometimes no password reset e-mail, when I create a user via the Auth0 Managemnt API (/api/v2/user) and then reset instantly the password via the Authentication API (/dbconnections/change_password). I’ve already read that auth0 has no consistent database in the back (User list not updating quickly on creation race condition) and this can lead to race condition.
The only bad thing is, that the reset password API throws no error and I can not handle this case.

Can we consider this as a bug or is this a expected behavior? That the auth0 authentication API return no 4XX HTTP Status?