Possible PvP bug


What you were expecting to happen, and what actually happened?

I was expecting Invade and Revenge to have no affect on each other.

What are the steps to make it happen again?

Select [Revenge] and then [Defend], but choose [X] instead of [Fight!] to go back to the PvP hub.
Select [Invade], and it will load the defense battle again as opposed to finding someone new.