Catarina stuck in a loop

For several minutes after killing each of her lieutenants, Catarina gets stuck in a loop. This happens after each of her lieutenants are killed. During that loop, I can take damage, she cannot. These loops last several minutes at a time.

After a lieutenant dies you are supposed to damage her a little more and then you receive a beam pointing you toward one of the side towers to destroy by being near it. This makes her vulnerable again.

Is that not all happening?