After winning a game as Ambusher, I went to check how close I was to the 25 wins and saw that several of my Coven-related stats were entirely wrong values. Among other problems, it's claiming two things that are literally impossible just by looking at the leaderboards:
I actually have 25 hypnotist wins and am on the leaderboard correctly, but my in-game display is 1:
https://i.imgur.com/SLlUs0H.pngI actually have 1 juggernaut win and am not on the leaderboard, but my in-game display is 19:
https://i.imgur.com/b4hTvu0.pngI'm pretty sure that all numerical values for coven stats are displaying two spaces higher on the list than they actually belong. Hypnotist is two lines above Juggernaut, and I have a 25 listed next to Trapper, which is two lines above Hypnotist. This would also explain why my bottom two stats are both recorded as 0 despite having more than 10 wins with both of them:
https://i.imgur.com/IvYbWZK.pngI have the same problem in both the browser and Steam versions.
EDIT: i double checked by getting a Plaguebearer win and now I have a 20 under Juggernaut (two above Plaguebearer). It's pretty likely that I'm right about all the numbers being shifted up by two.