The last reward block is actually missing?
It hasn't been paid out yet. We're only at 78 confirmations and I believe it doesn't pay out until 101.
Even still, from what I've read, the transaction is placed with low fees so it is only guaranteed to be paid out when we hit our next block after the 101 confirmations, but another block could pick them up.
Yes, reward will be sent after 101 confirms, but it can show up in reward page before that.
At the moment, I do not see the reward for the last block we mined.