Yep. This happened with a goliath and with a wraith too on the same day. My team chatched the monster well in the arena. There are almost always some places when the dome’s wall landing on top of an edge and until the wall is active, the monster can’t climb up there… Or sometimes she CAN and if she reach the wall this way the monster is able to just walk through it.
I bought a game with dlc-s, but I got only PC Glitchy Race Edition. It’s just painful how many bugs in the game, Big Alpha was way better… there was no-one who’s dead body fall off the map. And now the Behemoth… It’s pain in the *** to play with a half-working monster. And not just the monster, the whole game is feel more like a still in development product, not finished, tested. I played 450 hrs of the game and this arena glitch thing is the top of the mountain. I’m ******* done now.