Prior games of season deleted

I got thrown out of a versus match (running game closed and I landed in the starting menue) and after that it didn’t account my past games anymore - they are still in my history but not with any mmr change (as in I see it is a win but no +points) and my stats of this season are set back to 0-0 and I start on 3500mmr - was 4900 before that happened.

I had the same thing happen. 200+ games and 1000 MMR lost. Hopefully Blizzard can fix it.

That happened to me too. I was on over 200 FFA games, the last games are still shown in the list, but the score then started fresh on 0-0.
Additionally I had a game which I lost as 2nd place and got -1915 MMR points !
You can find the game on 08/27/24 16:31 (Twilight Ruins).

Is this a feature ?

Well it seems to be a feature for people who cry when crossmapped but tunnel crossmap in any 3 way they can get. So I’d say for you it is well deserved and maybe not even enough.