When i check my running tor relay (Fingerprint: $66a81cecd3aef6999982c5abee1942e3e5ab3b1c ) on this site i notice that the "Onion Key" field (located near bottom of the page) is empty.  My relay has been running for over 24 hours and i still dont see anything in that field.  I tested out my relay as an EntryNode and i was able to access the internet through tor fine.  I have watched the Bandwidth Graph and seen other users use my Relay so it is running fine.

But i cant understand why my Onion Key field is empty.  When i check other relays on the site (every relay i've checked) has an Onion Key displayed including relays that have just started running less than 10 mins ago.

You can see all the relays here.  Click any and of the displayed relays and notice each has a displayed Onion Key -- except my relay.