AWS SDK 2.0.29 XML parsing issue

Gemfile

source 'https://rubygems.org'

#gem 'nokogiri'
gem 'aws-sdk', '~> 2'

Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    aws-sdk (2.0.29)
      aws-sdk-resources (= 2.0.29)
    aws-sdk-core (2.0.29)
      builder (~> 3.0)
      jmespath (~> 1.0)
      multi_json (~> 1.0)
      multi_xml (~> 0.5)
    aws-sdk-resources (2.0.29)
      aws-sdk-core (= 2.0.29)
    builder (3.2.2)
    jmespath (1.0.2)
      multi_json (~> 1.0)
    multi_json (1.11.0)
    multi_xml (0.5.5)

PLATFORMS
  ruby

DEPENDENCIES
  aws-sdk (~> 2)

xml_parsing_issue.rb

require 'bundler/setup'

require 'aws-sdk'

sqs = Aws::SQS::Client.new

shape = sqs.config.api.operation(:receive_message).output
shape =  Seahorse::Model::Shapes::Structure.new({
  'members' => {
    shape.metadata('resultWrapper') => shape.definition,
    'ResponseMetadata' => {
      'type' => 'structure',
      'members' => {
        'RequestId' => { 'type' => 'string' }
      }
    }
  }
}, shape_map: shape.shape_map)
xml = "<ReceiveMessageResponse>\n    <ReceiveMessageResult>\n    </ReceiveMessageResult>\n    <ResponseMetadata>\n        <RequestId>19643011-2310-45d0-8611-e8eaaccc550e</RequestId>\n    </ResponseMetadata>\n</ReceiveMessageResponse>\n"
Aws::Xml::Parser.new(shape).parse(xml)