Can't disable IPv6 support on Cloudfront Web Distribution

[SkxNMDI5]

Creating a cloudfront web distribution with IP v6 support disabled :

const cloudfrontDistribution = new cloudfront.CloudFrontWebDistribution(
      this,
      "MyDistribution",
      {
        originConfigs: [
          {
            behaviors: [
              {
                isDefaultBehavior: true
              }
            ],
            s3OriginSource: {
              s3BucketSource: myBucket
            }
          }
        ],
        enableIpV6: false
      }
    );

results in a Cloudformation template containing :

IPV6Enabled: true

which is not the expected behavior.