I used to act out a lot, I think. Most of it was unconscious too. Usually it was self harm, suicidal threats or drug use. I'm not a very confrontational type of person, so I usually did not act out during sessions. It was more doing it at home and then asking for extra sessions because I was not doing well. A few months ago my T decided to just give me two sessions every week. Now I don't really experience this anymore, so I do think that all of these behaviors were me needing more attention.
Before, my T would react and give me extra sessions and phone calls, but since it wasn't every week, I'd act out in order to get what I needed each time I needed it.