Path of Exile Rathbreaker bug

Arrived to Rathbreaker's "arena",killed a pack of mobs,killed the "bodyguards",RB rushed down next to one of the hyena spawning point,got some damage,then just moving back to the original position,then not moving and also invulnerable.


https://www.youtube.com/watch?v=9cE1HvI5MrA