It used to be that if Uugo was last on the team sheet, and an aoe wiped your entire team, the aoe would hit Uugo "last," allowing her passive "Final Spite" to kick in and keep her alive.

Now it's not working, at least in arena, Uugo can die to the same aoe as her remaining team member(s), even when she is last on the team sheet with her passive off cooldown.

I believe with bug was introduced recently, maybe related to the introduction of Conellia.