EFS volume in Batch job running on Fargate

Hi,

I'm trying to use an EFS volume in a Batch job running on AWS Fargate. The support for EFS volumes was added in Fargate version 1.4.0 (see here). In the linked article, it's also stated that using LATEST is equivalent to specifying version number 1.4.0. However, when I try to specify the LATEST as a Fargate platform version in the Batch job definition where I also specify EFS volumes, I get this error:

Failed to register job definition
Error: Error executing request, Exception : EFS is supported for Fargate platform version 1.4.0., RequestId: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

Specifying an explicit version number 1.4.0 works without problems. If this is a bug, how to report the issue?