Per this explanation, reopen votes should expire at a rate of 1 per day after 4 days of no new reopen votes, providing the question has over 100 views.
But I've seen at least two cases now where this has not appeared to happen. A question will get additional reopen votes, and the votes start to expire immediately on the next day.
Two example questions are this one which got its 3rd reopen vote 2 days ago and now has 1, and this one (now deleted) which had the votes start to expire 1 day after it's 4th reopen vote.
In both cases, I was watching to see if they got enough reopen votes and expected to see a 4-day period after the last reopen vote before they started to expire, but saw votes start to expire sooner. I think they started to expire 4 days after the 1st reopen vote, even though they had subsequent reopen votes a few days afterwards, but I can't be positive of that.
Both example questions are for The Workplace, which is a beta site, so I am not sure if this only affects beta sites or not.
Is this a bug? Or did the policy for how votes expire change? Or did I just misunderstand the original explanation of how vote expiring works? Or perhaps I'm just going crazy... I didn't ask about this the first time I saw it happen because I figured I was just remembering things incorrectly, but now it's happened a 2nd time