Twisted Treeline Ivern Jungle Bug with wolves

In Twisted treeline, jungling as Ivern causes a weird bug where taking the wolf Jungle camp on one side causes ONE small wolf to either despawn or be "killed" on the opposite side. This seems to happen every time.

For example, let's say I invade enemy jungle. I walk by my wolves and see 3 of them. I go to make the grove and smite kill their wolves. It gives me 4 minions kills, and upon returning to my jungle, one of the small wolves is gone.