temporarily banned from playing after "abandoning" match after it ended regularly

[k1ck4ss.civ+deadlock]

So, that last match ended and I quit spectating just after it and wanted to commend some players like always I do.
Next thing I saw was something with "low priority matchmaking" and then, after I want to play again I see this:

In the start screen I see this thing with low prio matchmaking together with "1 win left" which I never saw before. What should I do? At least pls. unban me.

 

[fkmmarr]

What do you mean by "quit spectating it." Are you force-quitting before the game shows the ending screen?

 

[k1ck4ss.civ+deadlock]

What do you mean by "quit spectating it." Are you force-quitting before the game shows the ending screen?

Yes. It never has been an issue.
Screen before showing the statistics
Like this, it's when I win or lose a game (here it's a lost game):

 

[fkmmarr]

I'm glad you brought it to the dev's attention. In my opinion, the lack of penalty in the past was the bug, not the current behavior. What you're doing is abandoning the match (ie, rage quitting) before it officially ends. Just wait the 3 seconds for the game to end normally and give commendations on the post-game screen.