Invest Event and Aristocrat.
Game # 165613421
I invested in Aristocrat which made my estates into Aristocrats.
Turn 11 played an Estate. Did not get 3 actions.
Turn 13. Played an Aristocrat for 3 actions. Played an Estate, got 3 more actions. Played another estate and got 3 more actions. Played a 2nd Aristocrat, got 3 cards.
It looks like the Invest is not working correctly with the Invest.
I believe this is actually correct behavior. If you play an estate with no other aristocrats in play, then the estate doesn't count as an aristocrat; it just plays the inherited one, so you have zero aristocrats in play, meaning it does nothing. If you first play one aristocrat and then play a bunch of estates, then for each of those estates, you have one aristocrat in play, so you get 3 actions each time.