with_role not querying all records irrespective of record

[siddushar]

User.with_role(:approver)

 User Load (5.5ms)  SELECT "users".* FROM "users" INNER JOIN "users_roles" ON "users_roles"."user_id" = "users"."id" INNER JOIN "roles" ON "roles"."id" = "users_roles"."role_id" WHERE (((roles.name = 'approver') AND (roles.resource_type IS NULL) AND (roles.resource_id IS NULL))) /* loading for inspect */ LIMIT $1  [["LIMIT", 11]]

Role Model

class Role < ApplicationRecord
  has_and_belongs_to_many :users, join_table: :users_roles

  belongs_to :resource, polymorphic: true, touch: true
end

User Model

class User < ApplicationRecord
  rolify before_add: :assign_child_roles
  rolify after_add: :remove_requested_role
end

When i'm trying to query all users with approval roles. It does not find all users(irrespective of resource). It find all users who has approval role and whose resource type is nil.

[siddushar]

Duplicate - #597