Something very odd just happened. At https://math.stackexchange.com/questions/4635287/how-to-calculate-sum-x-geq-0-fracxn-thetaxe-frac-xn-1n/4635299#comment9781104_4635299, I had yesterday voted for it to close. Just now, I revisited it, finding it closed and no activity by the poster, I decided to put a delete vote on top of the 2 already showing. But after casting my delete vote, the vote then stood at 1 (?!)
It seems super unlikely the votes aged out already... how else could I have gotten unlucky?!