[ANSWERED]bloodblafe the indomitable Bug

[ArisGD]

I am trying to kill the first boss weaves den Blackwing "blood low the indomitable" and when taking the orb to control it is automatically canceled and I am not able to do it, I think it is bug, does anyone know if this bug or I am doing something wrong?

[Borrean]

Please report any bugs you come across to the bug tracker.