For the record--since the deleted comment here suggests that maybe I was confusing this with some other game--my browsing history tells me that what I was playing was https://play.adrift.co/?game=http://www.adrift.co/files/games/TEE.blorb, as opposed to the "v3" you now get from clicking the green arrow. Clearly this was an old version of the game, but it's not like I deliberately sought out the older version (and I had no way of knowing it wasn't the most recent).