4-Lom not assisting on BH attack's out of turn, No GL present

After unlocking the era of anniversary characters, I built the Boba Fett Scion of Jango team up to the same one that was in Asajj's Marquee event (at least I think this was it). I've noticed that 4Lom never assists in the lineup when asajj or boba attack out of turn. Further tested it with other teams, none of which had GL's and he never assists.