Why is `ZFS over iSCSI` clones support limited?

Why are clones not supported when using `ZFS over iSCSI`? Refer to table in: https://pve.proxmox.com/wiki/Storage:_ZFS_over_ISCSI
Have you tried it? Admittedly, I have not. We don't have a reason to configure it. That said, quick code examination shows:
Code:
grep -i clone ZFSPlugin.pm
...
clone => { base => 1},

which indicates that clones should be supported.


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