rathbreaker doesn't want to fight

Hello,
beggining of act II.
the rathbreaker is just standing on his hill, he takes damage but regenerates too fast to kill him otherwise he is doing nothing.
also the small hyenas don't attack me.

is there a way to restart an act? or are there any other solutions?

thanks

Had the same issue. It occurred when I pulled him away from the hill and he was tethered back to his starting spot (tethered near the hyena spawn hole on the left). He then just stood still and regenerated health, it was a dirty kill!

Hope this helps, devs.

Same bug here