Played standard ranked, won the game victory appeared on the screen and my rank dropped a bar.
Thought perhaps this was a graphical bug but my profile showed the same decrease following the win.

amendment: immediately after posting this comment the season ended on ranked play when I returned.

I won a standard ranked best of 1 game & my rank went down a bar. I did at least still receive my rewards for winning the game.

won the match but the rank went down

Same happened to me right now. 2022.20.40.607.965897

My opponent won game one, and as I was moving to sideboard the game ended (via concession) and I seen the victory screen, then lost 2 ranks as if I had lost the match 2-0. I didn't catch the user name, but it was the last game I played before closing the client.

1. Lose game one, have opponent concede
2. PC
3. Lose 2 ranks (i'm in plat, so this is rank dependent i'm sure)
4. I expect to gain rank after winning a match via concession.
5. Log attached, I don't have any clue what's contained in them.
6. Don't lose game 1.

Please, please, please address this!
It's been consistent. When an opponent forfeits the match for whatever reason I either lose rank or gain no rank. For instance I just lost the first game of a bo3, then my op. forfeit during sideboard. I went down rank!
Regardless if the op got disconnected (which right when we go into sideboard seems coincidental), I definitely shouldn't go down in rank. A draw? Better. But why aren't players being given the ranks for winning when an op disconnects? I know this would go for me if I disconnect too. But that's how it goes, right? Would love to hear more on this if anyone can share.

Still presists, playing quick draft AFR b01 reached mythic and now the rank is gone.

i lost all my rank
I just hit the mythic rank
but lost all my rank

this just happened to me in a Bo3 match 4:30 est 7-2-21

I won a match but lost rank.

I won a match but lost rank.

Lost rank after a victory

I won a traditional standard ranked match and lost rank?

I just lost a game of FNM and it reduced my constructed rank.

This happened to me just a few minutes ago as well playing a BO1 standard event.

I played a not ranked match, won and lost 1 rank.

I won a ranked match and still lost a rank.