Strange.  I have not been able to confirm this, as I have not yet gotten a research hut in a game before starting research (still on my first game).  However, carryover is working as it had been in Beta -- if a research goodie hut finishes my current research project, there is a research bonus push that I presume to be the correct carryover amount applied to the next research project, even if the current research project is the end of my queue and I have to specify another research project; the bar for the new research project (whether queued or having to manually specify) partially fills from the research goodie hut, which indicates to me it is still working -- but, again, I have not yet actually gotten a research hut before an initial research project was specified.