The combustonaut fight in Engine Bay has a glitched Crash Technomite. It's frozen in place with no attacking or loitering animation. (And my glitched Aethermeter has returned...)
I noticed that, too. The damage has definitely been increased, and some automatons take less or more damage from certain weapons. Are you using your profession's special ability during the fight? As a medic, I can hold out for longer during the fight even if my damage isn't great.