When sorting by hot, I get posts with 1 upvote and no comments near the top. And it is above a post from the same community (nieuws) that has 2 upvotes. Seems to be broken.
Also, FWIW, I’m fairly sure Voyager doesn’t do the sorting, but rather, the instances themselves do it using Lenny’s built in algorithm. So there is nothing Voyager can do about the calculation.