Owlbear Cub's Presence doesn't work at all on test server

I'm not sure about Live, but on the test server, Owl bear's presence doesn't do anything.

I tried to dps test it on the test server; a legendary Owl bear cub, and after many minutes of dps testing, it didn't ever go off.

I'm not sure if this problem is isolated to the test server or not, because I don't actually have him attached to my character on Live.