[2020] Vomvalysts Do Not Drop Sentient Cores upon Defeat

This should be good now after the last hotfix. If you STILL don't see cores dropping, we're going to need more details:  Did you start a mission from cetus? Did you go straight into Plains as a squad? Do other people in your squad see cores, or does nobody? Did you host migrate? Do you have boosters active? We'll definitely jump on any lingering issues if you can help us nail them down.