Tank raid non heroic

Ok I just went to take on part 1, I have Vader, luke, thrawn, bb8 and wampa, have them with zets, vader lead, and around 3rd round general grevious, locked at a full bar of energy when he tried cleaning off his debuts from vader, and then he never stoped moving, just kept a full bar debugged, then buffed us and he just cleaned us up without us getting another attack, is this a bug or what? I couldn't even get in another attack cause he stay3d full energy and then after turn until my vader had 35 dots on him..