Updated mongo gem from 2.1.1 to 2.20.

I have the following Mongoid document:

class Person
include Mongoid::Document

field :status, type: Symbol
end

If i create a new person:

Person.create status: :deceased

And try to query it, it returns nil:

Person.where(status: :deceased).first
=> nil

This used to work fine on 2.1.1, is this a bug or just a breaking change from 2.2.0?