Cloned zvol snapshot no node in /dev/zvol until after reboot

Why does a cloned zvol snapshot in FreeBSD 10.0-RC5 would not appear in /dev/zvol until after a reboot? Is this a bug or am I missing something?

Code:
zfs clone -p tank/targets/test1/c@1 ziege/targets/test1/clone

Update: I've just updated to FreeBSD 10.0-RELEASE and the issue is still there. It also appears to be discussed in this bug report: http://www.freebsd.org/cgi/query-pr.cgi?pr=178999
At this stage what should I do?
 
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