Auxiliary Statements doesn't work with Inheritance

Consider

# /app/models/account.rb
class Account < Account
  auxiliary_statement :balance do |cte|
    cte.query AccountTransaction.approved.group(:account_id)
    cte.attributes col(:value).sum => :balance
    cte.join_type :left
  end
end

# /app/models/user.rb
class User < Account
end

The following doesn't work:

User.with(:balance).first.balance
# There's no 'balance' auxiliary statement defined

The current workaround is the following

Account.cast_records(User, filter: true).with(:balance).first.balance