ZFS snapdir=visible breaks Galera rsync SST replication

Using ZFS with the following example config:

zfs create tank/mysql

zfs set snapdir=visible tank/mysql

zfs set mountpoint=/mysql tank/mysql

my.cnf:

[mysqld]

datadir=/mysql

[galera]

wsrep_on=ON

wsrep_sst_method = rsync

rsync will attempt to sync the .zfs special folder, which breaks rsync (and thus sst replication)

incoming patch in just a few minutes.