My rank went up when I lost

[_KoBa]

From OGS has a new Glicko-2 based rating system! [2017]

@anoek

We maintain a running tally of up to 15 games recently played, along with a “base” glicko-2 rating and a “current” rating. Your “current” rating is the rating that everyone sees and is used when match making and computing handicaps. When you finish a game, we add the game to the list of games, and compute your new “current” rating by applying the results of those games to your “base” rating. When recomputing, we also use your opponents’ “current” ratings as opposed to simply the ratings they were when the game originally concluded.