Jungle Bugs
So, I have been playing only jungle since the jungle change. And I've noticed that every game I've played, the buffs just don't go away after smiting a camp, aside from the raptor buff, but that's because it's a one time alert. I have been getting games where the stun buff from the krugs is with me for basically the whole game. Same with the poison buff.
I don't think this is intended or the buff duration on the bottom left bar wouldn't show up.
Also, I'm unsure if they drop off you when you die. I guess I don't look for it as much because I just go around and get the buffs by accident most of the time. But I do know that the buffs last a lot longer than they are intended to via the buff timer.