>> h = Hash[

{"a" => 1}]
=> {"a"=>1}
>> oh = BSON::OrderedHash[{"a" => 1}

]
=>

{"a"=>1}

>> h.eql? oh
=> true
>> h.hash.eql? oh.hash
=> false
>> h.hash.eql? Hash[oh].hash
=> true

Is this behavior intentional? It complicates code where hashes are being used as hash keys.