Apparently only NFSv4 minorversion "2" is affected ("2" is default, if not specified otherwise), "0" and "1" are not. NFSv3 isn't affected as well. See mount_nfs for "minorversion" and "nfsv4".
On my test setup (15.0-RELEASE, NFS server and client), a minorversion=2 copies a file, but it's...